Renaming ecma_op_number_{add,subtract,multiply,divide} -> ecma_number_{add,subtract,multiply,divide}.
Moving ecma_number_{add,subtract,multiply,divide} to src/libecmaobjects/ecma-helpers-number.c.
Moving abs, sqrt, ln, exp, calculation helpers from src/libecmabuiltins/ecma-builtin-math-object.c to src/libecmaobjects/ecma-helpers-number.c.
This commit is contained in:
@@ -63,22 +63,22 @@ do_number_arithmetic (int_data_t *int_data, /**< interpreter context */
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{
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case number_arithmetic_addition:
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{
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*res_p = ecma_op_number_add (*left_p, *right_p);
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*res_p = ecma_number_add (*left_p, *right_p);
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break;
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}
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case number_arithmetic_substraction:
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{
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*res_p = ecma_op_number_substract (*left_p, *right_p);
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*res_p = ecma_number_substract (*left_p, *right_p);
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break;
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}
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case number_arithmetic_multiplication:
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{
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*res_p = ecma_op_number_multiply (*left_p, *right_p);
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*res_p = ecma_number_multiply (*left_p, *right_p);
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break;
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}
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case number_arithmetic_division:
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{
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*res_p = ecma_op_number_divide (*left_p, *right_p);
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*res_p = ecma_number_divide (*left_p, *right_p);
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break;
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}
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case number_arithmetic_remainder:
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@@ -176,7 +176,7 @@ opfunc_pre_incr (opcode_t opdata, /**< operation data */
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ecma_number_t* new_num_p = ecma_alloc_number ();
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ecma_number_t* old_num_p = (ecma_number_t*) ECMA_GET_POINTER (old_num_value.u.value.value);
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*new_num_p = ecma_op_number_add (*old_num_p, ECMA_NUMBER_ONE);
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*new_num_p = ecma_number_add (*old_num_p, ECMA_NUMBER_ONE);
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ecma_value_t new_num_value = ecma_make_number_value (new_num_p);
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@@ -226,7 +226,7 @@ opfunc_pre_decr (opcode_t opdata, /**< operation data */
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ecma_number_t* new_num_p = ecma_alloc_number ();
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ecma_number_t* old_num_p = (ecma_number_t*) ECMA_GET_POINTER (old_num_value.u.value.value);
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*new_num_p = ecma_op_number_substract (*old_num_p, ECMA_NUMBER_ONE);
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*new_num_p = ecma_number_substract (*old_num_p, ECMA_NUMBER_ONE);
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ecma_value_t new_num_value = ecma_make_number_value (new_num_p);
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@@ -276,7 +276,7 @@ opfunc_post_incr (opcode_t opdata, /**< operation data */
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ecma_number_t* new_num_p = ecma_alloc_number ();
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ecma_number_t* old_num_p = (ecma_number_t*) ECMA_GET_POINTER (old_num_value.u.value.value);
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*new_num_p = ecma_op_number_add (*old_num_p, ECMA_NUMBER_ONE);
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*new_num_p = ecma_number_add (*old_num_p, ECMA_NUMBER_ONE);
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// 5.
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ret_value = set_variable_value (int_data,
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@@ -324,7 +324,7 @@ opfunc_post_decr (opcode_t opdata, /**< operation data */
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ecma_number_t* new_num_p = ecma_alloc_number ();
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ecma_number_t* old_num_p = (ecma_number_t*) ECMA_GET_POINTER (old_num_value.u.value.value);
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*new_num_p = ecma_op_number_substract (*old_num_p, ECMA_NUMBER_ONE);
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*new_num_p = ecma_number_substract (*old_num_p, ECMA_NUMBER_ONE);
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// 5.
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ret_value = set_variable_value (int_data,
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@@ -39,14 +39,6 @@
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* @{
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*/
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#if defined (CONFIG_ECMA_NUMBER_FLOAT32)
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const ecma_number_t ecma_builtin_math_object_relative_eps = 1.0e-10f;
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#elif defined (CONFIG_ECMA_NUMBER_FLOAT64)
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const ecma_number_t ecma_builtin_math_object_relative_eps = 1.0e-16;
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#else /* !CONFIG_ECMA_NUMBER_FLOAT32 && !CONFIG_ECMA_NUMBER_FLOAT64 */
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# error "!CONFIG_ECMA_NUMBER_FLOAT32 && !CONFIG_ECMA_NUMBER_FLOAT64"
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#endif /* !CONFIG_ECMA_NUMBER_FLOAT32 && !CONFIG_ECMA_NUMBER_FLOAT64 */
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/**
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* List of the Math object built-in value properties in format 'macro (name, value)'.
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*/
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@@ -158,180 +150,6 @@ const ecma_length_t ecma_builtin_math_property_number = (sizeof (ecma_builtin_ma
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sizeof (ecma_magic_string_id_t));
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JERRY_STATIC_ASSERT (sizeof (ecma_builtin_math_property_names) > sizeof (void*));
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/**
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* Helper for calculating absolute value
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*
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* Warning:
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* argument should be valid finite number
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*
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* @return square root of specified number
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*/
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static ecma_number_t
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ecma_builtin_math_object_helper_abs (ecma_number_t num) /**< valid finite number */
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{
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JERRY_ASSERT (!ecma_number_is_nan (num));
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if (num < 0)
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{
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return ecma_number_negate (num);
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}
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else
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{
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return num;
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}
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} /* ecma_builtin_math_object_helper_abs */
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/**
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* Helper for calculating square root using Newton's method.
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*
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* @return square root of specified number
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*/
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static ecma_number_t
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ecma_builtin_math_object_helper_sqrt (ecma_number_t num) /**< valid finite
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positive number */
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{
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JERRY_ASSERT (!ecma_number_is_nan (num));
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JERRY_ASSERT (!ecma_number_is_infinity (num));
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JERRY_ASSERT (!ecma_number_is_negative (num));
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ecma_number_t x = ECMA_NUMBER_ONE;
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ecma_number_t diff = ecma_number_make_infinity (false);
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while (ecma_op_number_divide (diff, x) > ecma_builtin_math_object_relative_eps)
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{
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ecma_number_t x_next = ecma_op_number_multiply (ECMA_NUMBER_HALF,
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(ecma_op_number_add (x,
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ecma_op_number_divide (num, x))));
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diff = ecma_op_number_substract (x, x_next);
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if (diff < 0)
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{
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diff = ecma_number_negate (diff);
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}
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x = x_next;
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}
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return x;
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} /* ecma_builtin_math_object_helper_sqrt */
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/**
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* Helper for calculating natural logarithm.
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*
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* @return natural logarithm of specified number
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*/
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static ecma_number_t
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ecma_builtin_math_object_helper_ln (ecma_number_t num) /**< valid finite
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positive number */
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{
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JERRY_ASSERT (!ecma_number_is_nan (num));
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JERRY_ASSERT (!ecma_number_is_infinity (num));
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JERRY_ASSERT (!ecma_number_is_negative (num));
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if (num == ECMA_NUMBER_ONE)
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{
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return ECMA_NUMBER_ZERO;
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}
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/* Taylor series of ln (1 + x) around x = 0 is x - x^2/2 + x^3/3 - x^4/4 + ... */
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ecma_number_t x = num;
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ecma_number_t multiplier = ECMA_NUMBER_ONE;
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while (ecma_builtin_math_object_helper_abs (ecma_op_number_substract (x,
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ECMA_NUMBER_ONE)) > ECMA_NUMBER_HALF)
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{
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x = ecma_builtin_math_object_helper_sqrt (x);
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multiplier = ecma_op_number_multiply (multiplier, ECMA_NUMBER_TWO);
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}
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x = ecma_op_number_substract (x, ECMA_NUMBER_ONE);
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ecma_number_t sum = ECMA_NUMBER_ZERO;
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ecma_number_t next_power = x;
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ecma_number_t next_divisor = ECMA_NUMBER_ONE;
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ecma_number_t diff;
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do
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{
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ecma_number_t next_sum = ecma_op_number_add (sum,
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ecma_op_number_divide (next_power,
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next_divisor));
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next_divisor = ecma_op_number_add (next_divisor, ECMA_NUMBER_ONE);
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next_power = ecma_op_number_multiply (next_power, x);
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next_power = ecma_number_negate (next_power);
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diff = ecma_builtin_math_object_helper_abs (ecma_op_number_substract (sum, next_sum));
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sum = next_sum;
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}
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while (ecma_builtin_math_object_helper_abs (ecma_op_number_divide (diff,
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sum)) > ecma_builtin_math_object_relative_eps);
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sum = ecma_op_number_multiply (sum, multiplier);
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return sum;
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} /* ecma_builtin_math_object_helper_ln */
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/**
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* Helper for calculating exponent of a number
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*
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* @return exponent of specified number
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*/
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static ecma_number_t
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ecma_builtin_math_object_helper_exp (ecma_number_t num) /**< valid finite number */
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{
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JERRY_ASSERT (!ecma_number_is_nan (num));
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JERRY_ASSERT (!ecma_number_is_infinity (num));
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bool invert = false;
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ecma_number_t pow_e;
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if (ecma_number_is_negative (num))
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{
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invert = true;
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pow_e = ecma_number_negate (num);
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}
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else
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{
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pow_e = num;
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}
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/* Taylor series of e^x is 1 + x/1! + x^2/2! + x^3/3! + ... + x^n/n! + ... */
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ecma_number_t sum = ECMA_NUMBER_ONE;
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ecma_number_t next_addendum = ecma_op_number_divide (pow_e, ECMA_NUMBER_ONE);
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ecma_number_t next_factorial_factor = ECMA_NUMBER_ONE;
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ecma_number_t diff = ecma_number_make_infinity (false);
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while (ecma_op_number_divide (diff, sum) > ecma_builtin_math_object_relative_eps)
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{
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ecma_number_t next_sum = ecma_op_number_add (sum, next_addendum);
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next_factorial_factor = ecma_op_number_add (next_factorial_factor, ECMA_NUMBER_ONE);
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next_addendum = ecma_op_number_multiply (next_addendum, pow_e);
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next_addendum = ecma_op_number_divide (next_addendum, next_factorial_factor);
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diff = ecma_op_number_substract (sum, next_sum);
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if (diff < 0)
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{
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diff = ecma_number_negate (diff);
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}
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sum = next_sum;
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}
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if (invert)
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{
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sum = ecma_op_number_divide (ECMA_NUMBER_ONE, sum);
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}
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return sum;
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} /* ecma_builtin_math_object_helper_exp */
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/**
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* The Math object's 'abs' routine
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*
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@@ -353,14 +171,14 @@ ecma_builtin_math_object_abs (ecma_value_t arg) /**< routine's argument */
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ecma_number_t *num_p = ecma_alloc_number ();
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const ecma_number_t arg_num = *(ecma_number_t*) ECMA_GET_POINTER (arg_num_value.u.value.value);
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if (ecma_number_is_nan (arg_num))
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{
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*num_p = arg_num;
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}
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else
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{
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*num_p = ecma_builtin_math_object_helper_abs (arg_num);
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*num_p = ecma_number_abs (arg_num);
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}
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ret_value = ecma_make_normal_completion_value (ecma_make_number_value (num_p));
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@@ -482,7 +300,7 @@ ecma_builtin_math_object_exp (ecma_value_t arg) /**< routine's argument */
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ecma_number_t *num_p = ecma_alloc_number ();
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const ecma_number_t arg_num = *(ecma_number_t*) ECMA_GET_POINTER (arg_num_value.u.value.value);
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if (ecma_number_is_nan (arg_num))
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{
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*num_p = arg_num;
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@@ -504,7 +322,7 @@ ecma_builtin_math_object_exp (ecma_value_t arg) /**< routine's argument */
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}
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else
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{
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*num_p = ecma_builtin_math_object_helper_exp (arg_num);
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*num_p = ecma_number_exp (arg_num);
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}
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ret_value = ecma_make_normal_completion_value (ecma_make_number_value (num_p));
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@@ -550,7 +368,7 @@ ecma_builtin_math_object_log (ecma_value_t arg) /**< routine's argument */
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ecma_number_t *num_p = ecma_alloc_number ();
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const ecma_number_t arg_num = *(ecma_number_t*) ECMA_GET_POINTER (arg_num_value.u.value.value);
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if (ecma_number_is_nan (arg_num))
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{
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*num_p = arg_num;
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@@ -569,7 +387,7 @@ ecma_builtin_math_object_log (ecma_value_t arg) /**< routine's argument */
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}
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else
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{
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*num_p = ecma_builtin_math_object_helper_ln (arg_num);
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*num_p = ecma_number_ln (arg_num);
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}
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ret_value = ecma_make_normal_completion_value (ecma_make_number_value (num_p));
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@@ -798,7 +616,7 @@ ecma_builtin_math_object_pow (ecma_value_t arg1, /**< first routine's argument *
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}
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else if (ecma_number_is_infinity (y))
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{
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const ecma_number_t x_abs = ecma_builtin_math_object_helper_abs (x);
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const ecma_number_t x_abs = ecma_number_abs (x);
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if (x_abs == ECMA_NUMBER_ONE)
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{
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@@ -820,17 +638,17 @@ ecma_builtin_math_object_pow (ecma_value_t arg1, /**< first routine's argument *
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else
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{
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const ecma_number_t diff_is_int = ecma_op_number_remainder (y, ECMA_NUMBER_ONE);
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const ecma_number_t rel_diff_is_int = ecma_builtin_math_object_helper_abs (ecma_op_number_divide (diff_is_int,
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y));
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const ecma_number_t y_int = ecma_op_number_substract (y, diff_is_int);
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const ecma_number_t rel_diff_is_int = ecma_number_abs (ecma_number_divide (diff_is_int,
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y));
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const ecma_number_t y_int = ecma_number_substract (y, diff_is_int);
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const ecma_number_t y_int_half = ecma_op_number_multiply (y_int, ECMA_NUMBER_HALF);
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const ecma_number_t y_int_half = ecma_number_multiply (y_int, ECMA_NUMBER_HALF);
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const ecma_number_t diff_is_odd = ecma_op_number_remainder (y_int_half, ECMA_NUMBER_ONE);
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const ecma_number_t rel_diff_is_odd = ecma_builtin_math_object_helper_abs (ecma_op_number_divide (diff_is_odd,
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y_int_half));
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const ecma_number_t rel_diff_is_odd = ecma_number_abs (ecma_number_divide (diff_is_odd,
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y_int_half));
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const bool is_y_int = (rel_diff_is_int < ecma_builtin_math_object_relative_eps);
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const bool is_y_odd = (is_y_int && rel_diff_is_odd > ecma_builtin_math_object_relative_eps);
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const bool is_y_int = (rel_diff_is_int < ecma_number_relative_eps);
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const bool is_y_odd = (is_y_int && rel_diff_is_odd > ecma_number_relative_eps);
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if (ecma_number_is_infinity (x))
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{
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@@ -960,21 +778,21 @@ ecma_builtin_math_object_pow (ecma_value_t arg1, /**< first routine's argument *
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{
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if (power_uint32 % 2)
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{
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ret_num = ecma_op_number_multiply (ret_num, power_accumulator);
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ret_num = ecma_number_multiply (ret_num, power_accumulator);
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power_uint32--;
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}
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power_accumulator = ecma_op_number_multiply (power_accumulator, power_accumulator);
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power_accumulator = ecma_number_multiply (power_accumulator, power_accumulator);
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power_uint32 /= 2;
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}
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}
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else
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{
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/* pow (x, y) = exp (y * ln (x)) */
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ecma_number_t ln_x = ecma_builtin_math_object_helper_ln (positive_x);
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ecma_number_t y_m_ln_x = ecma_op_number_multiply (positive_y, ln_x);
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ret_num = ecma_builtin_math_object_helper_exp (y_m_ln_x);
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ecma_number_t ln_x = ecma_number_ln (positive_x);
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ecma_number_t y_m_ln_x = ecma_number_multiply (positive_y, ln_x);
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ret_num = ecma_number_exp (y_m_ln_x);
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}
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if (sign)
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@@ -984,7 +802,7 @@ ecma_builtin_math_object_pow (ecma_value_t arg1, /**< first routine's argument *
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if (invert)
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{
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ret_num = ecma_op_number_divide (ECMA_NUMBER_ONE, ret_num);
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ret_num = ecma_number_divide (ECMA_NUMBER_ONE, ret_num);
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}
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*num_p = ret_num;
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@@ -1061,7 +879,7 @@ ecma_builtin_math_object_round (ecma_value_t arg) /**< routine's argument */
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ecma_number_t *num_p = ecma_alloc_number ();
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const ecma_number_t arg_num = *(ecma_number_t*) ECMA_GET_POINTER (arg_num_value.u.value.value);
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if (ecma_number_is_nan (arg_num)
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|| ecma_number_is_zero (arg_num)
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|| ecma_number_is_infinity (arg_num))
|
||||
@@ -1151,7 +969,7 @@ ecma_builtin_math_object_sqrt (ecma_value_t arg) /**< routine's argument */
|
||||
}
|
||||
else
|
||||
{
|
||||
ret_num = ecma_builtin_math_object_helper_sqrt (arg_num);
|
||||
ret_num = ecma_number_sqrt (arg_num);
|
||||
}
|
||||
|
||||
ecma_number_t *num_p = ecma_alloc_number ();
|
||||
@@ -1325,10 +1143,10 @@ ecma_builtin_math_dispatch_routine (ecma_magic_string_id_t builtin_routine_id, /
|
||||
#define ROUTINE_ARG_LIST_3 ROUTINE_ARG_LIST_2, ROUTINE_ARG(3)
|
||||
#define ROUTINE_ARG_LIST_NON_FIXED arguments_list, arguments_number
|
||||
#define CASE_ROUTINE_PROP_LIST(name, c_function_name, args_number, length) \
|
||||
case name: \
|
||||
{ \
|
||||
return c_function_name (ROUTINE_ARG_LIST_ ## args_number); \
|
||||
}
|
||||
case name: \
|
||||
{ \
|
||||
return c_function_name (ROUTINE_ARG_LIST_ ## args_number); \
|
||||
}
|
||||
ECMA_BUILTIN_MATH_OBJECT_ROUTINES_PROPERTY_LIST (CASE_ROUTINE_PROP_LIST)
|
||||
#undef CASE_ROUTINE_PROP_LIST
|
||||
#undef ROUTINE_ARG_LIST_0
|
||||
|
||||
@@ -75,6 +75,11 @@ typedef struct
|
||||
* IEEE-754 2008, 3.6, Table 3.5
|
||||
*/
|
||||
const int32_t ecma_number_exponent_bias = 127;
|
||||
|
||||
/**
|
||||
* Relative precision used in calculation with ecma-numbers
|
||||
*/
|
||||
const ecma_number_t ecma_number_relative_eps = 1.0e-10f;
|
||||
#elif defined (CONFIG_ECMA_NUMBER_FLOAT64)
|
||||
JERRY_STATIC_ASSERT (sizeof (ecma_number_t) == sizeof (uint64_t));
|
||||
|
||||
@@ -127,6 +132,11 @@ typedef struct
|
||||
* IEEE-754 2008, 3.6, Table 3.5
|
||||
*/
|
||||
const int32_t ecma_number_exponent_bias = 1023;
|
||||
|
||||
/**
|
||||
* Relative precision used in calculation with ecma-numbers
|
||||
*/
|
||||
const ecma_number_t ecma_number_relative_eps = 1.0e-16;
|
||||
#else /* !CONFIG_ECMA_NUMBER_FLOAT32 && !CONFIG_ECMA_NUMBER_FLOAT64 */
|
||||
# error "!CONFIG_ECMA_NUMBER_FLOAT32 && !CONFIG_ECMA_NUMBER_FLOAT64"
|
||||
#endif /* !CONFIG_ECMA_NUMBER_FLOAT32 && !CONFIG_ECMA_NUMBER_FLOAT64 */
|
||||
@@ -399,6 +409,227 @@ ecma_number_negate (ecma_number_t num) /**< ecma-number */
|
||||
return u.value;
|
||||
} /* ecma_number_negate */
|
||||
|
||||
/**
|
||||
* ECMA-number addition.
|
||||
*
|
||||
* @return number - result of addition.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_add (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return left_num + right_num;
|
||||
} /* ecma_number_add */
|
||||
|
||||
/**
|
||||
* ECMA-number substraction.
|
||||
*
|
||||
* @return number - result of substraction.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_substract (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return ecma_number_add (left_num, ecma_number_negate (right_num));
|
||||
} /* ecma_number_substract */
|
||||
|
||||
/**
|
||||
* ECMA-number multiplication.
|
||||
*
|
||||
* @return number - result of multiplication.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_multiply (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return left_num * right_num;
|
||||
} /* ecma_number_multiply */
|
||||
|
||||
/**
|
||||
* ECMA-number division.
|
||||
*
|
||||
* @return number - result of division.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_divide (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return left_num / right_num;
|
||||
} /* ecma_number_divide */
|
||||
|
||||
/**
|
||||
* Helper for calculating absolute value
|
||||
*
|
||||
* Warning:
|
||||
* argument should be valid number
|
||||
*
|
||||
* @return absolute value of the argument
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_abs (ecma_number_t num) /**< valid number */
|
||||
{
|
||||
JERRY_ASSERT (!ecma_number_is_nan (num));
|
||||
|
||||
if (num < 0)
|
||||
{
|
||||
return ecma_number_negate (num);
|
||||
}
|
||||
else
|
||||
{
|
||||
return num;
|
||||
}
|
||||
} /* ecma_number_abs */
|
||||
|
||||
/**
|
||||
* Helper for calculating square root using Newton's method.
|
||||
*
|
||||
* @return square root of specified number
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_sqrt (ecma_number_t num) /**< valid finite
|
||||
positive number */
|
||||
{
|
||||
JERRY_ASSERT (!ecma_number_is_nan (num));
|
||||
JERRY_ASSERT (!ecma_number_is_infinity (num));
|
||||
JERRY_ASSERT (!ecma_number_is_negative (num));
|
||||
|
||||
ecma_number_t x = ECMA_NUMBER_ONE;
|
||||
ecma_number_t diff = ecma_number_make_infinity (false);
|
||||
|
||||
while (ecma_number_divide (diff, x) > ecma_number_relative_eps)
|
||||
{
|
||||
ecma_number_t x_next = ecma_number_multiply (ECMA_NUMBER_HALF,
|
||||
(ecma_number_add (x,
|
||||
ecma_number_divide (num, x))));
|
||||
|
||||
diff = ecma_number_substract (x, x_next);
|
||||
if (diff < 0)
|
||||
{
|
||||
diff = ecma_number_negate (diff);
|
||||
}
|
||||
|
||||
x = x_next;
|
||||
}
|
||||
|
||||
return x;
|
||||
} /* ecma_number_sqrt */
|
||||
|
||||
/**
|
||||
* Helper for calculating natural logarithm.
|
||||
*
|
||||
* @return natural logarithm of specified number
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_ln (ecma_number_t num) /**< valid finite
|
||||
positive number */
|
||||
{
|
||||
JERRY_ASSERT (!ecma_number_is_nan (num));
|
||||
JERRY_ASSERT (!ecma_number_is_infinity (num));
|
||||
JERRY_ASSERT (!ecma_number_is_negative (num));
|
||||
|
||||
if (num == ECMA_NUMBER_ONE)
|
||||
{
|
||||
return ECMA_NUMBER_ZERO;
|
||||
}
|
||||
|
||||
/* Taylor series of ln (1 + x) around x = 0 is x - x^2/2 + x^3/3 - x^4/4 + ... */
|
||||
|
||||
ecma_number_t x = num;
|
||||
ecma_number_t multiplier = ECMA_NUMBER_ONE;
|
||||
|
||||
while (ecma_number_abs (ecma_number_substract (x,
|
||||
ECMA_NUMBER_ONE)) > ECMA_NUMBER_HALF)
|
||||
{
|
||||
x = ecma_number_sqrt (x);
|
||||
multiplier = ecma_number_multiply (multiplier, ECMA_NUMBER_TWO);
|
||||
}
|
||||
|
||||
x = ecma_number_substract (x, ECMA_NUMBER_ONE);
|
||||
|
||||
ecma_number_t sum = ECMA_NUMBER_ZERO;
|
||||
ecma_number_t next_power = x;
|
||||
ecma_number_t next_divisor = ECMA_NUMBER_ONE;
|
||||
|
||||
ecma_number_t diff;
|
||||
|
||||
do
|
||||
{
|
||||
ecma_number_t next_sum = ecma_number_add (sum,
|
||||
ecma_number_divide (next_power,
|
||||
next_divisor));
|
||||
|
||||
next_divisor = ecma_number_add (next_divisor, ECMA_NUMBER_ONE);
|
||||
next_power = ecma_number_multiply (next_power, x);
|
||||
next_power = ecma_number_negate (next_power);
|
||||
|
||||
diff = ecma_number_abs (ecma_number_substract (sum, next_sum));
|
||||
|
||||
sum = next_sum;
|
||||
}
|
||||
while (ecma_number_abs (ecma_number_divide (diff,
|
||||
sum)) > ecma_number_relative_eps);
|
||||
|
||||
sum = ecma_number_multiply (sum, multiplier);
|
||||
|
||||
return sum;
|
||||
} /* ecma_number_ln */
|
||||
|
||||
/**
|
||||
* Helper for calculating exponent of a number
|
||||
*
|
||||
* @return exponent of specified number
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_number_exp (ecma_number_t num) /**< valid finite number */
|
||||
{
|
||||
JERRY_ASSERT (!ecma_number_is_nan (num));
|
||||
JERRY_ASSERT (!ecma_number_is_infinity (num));
|
||||
|
||||
bool invert = false;
|
||||
ecma_number_t pow_e;
|
||||
|
||||
if (ecma_number_is_negative (num))
|
||||
{
|
||||
invert = true;
|
||||
pow_e = ecma_number_negate (num);
|
||||
}
|
||||
else
|
||||
{
|
||||
pow_e = num;
|
||||
}
|
||||
|
||||
/* Taylor series of e^x is 1 + x/1! + x^2/2! + x^3/3! + ... + x^n/n! + ... */
|
||||
|
||||
ecma_number_t sum = ECMA_NUMBER_ONE;
|
||||
ecma_number_t next_addendum = ecma_number_divide (pow_e, ECMA_NUMBER_ONE);
|
||||
ecma_number_t next_factorial_factor = ECMA_NUMBER_ONE;
|
||||
|
||||
ecma_number_t diff = ecma_number_make_infinity (false);
|
||||
|
||||
while (ecma_number_divide (diff, sum) > ecma_number_relative_eps)
|
||||
{
|
||||
ecma_number_t next_sum = ecma_number_add (sum, next_addendum);
|
||||
|
||||
next_factorial_factor = ecma_number_add (next_factorial_factor, ECMA_NUMBER_ONE);
|
||||
next_addendum = ecma_number_multiply (next_addendum, pow_e);
|
||||
next_addendum = ecma_number_divide (next_addendum, next_factorial_factor);
|
||||
|
||||
diff = ecma_number_substract (sum, next_sum);
|
||||
if (diff < 0)
|
||||
{
|
||||
diff = ecma_number_negate (diff);
|
||||
}
|
||||
|
||||
sum = next_sum;
|
||||
}
|
||||
|
||||
if (invert)
|
||||
{
|
||||
sum = ecma_number_divide (ECMA_NUMBER_ONE, sum);
|
||||
}
|
||||
|
||||
return sum;
|
||||
} /* ecma_number_exp */
|
||||
|
||||
/**
|
||||
* @}
|
||||
|
||||
@@ -129,6 +129,8 @@ extern bool ecma_is_string_magic (ecma_string_t *string_p, ecma_magic_string_id_
|
||||
extern bool ecma_is_zt_string_magic (ecma_char_t *zt_string_p, ecma_magic_string_id_t *out_id_p);
|
||||
|
||||
/* ecma-helpers-number.c */
|
||||
extern const ecma_number_t ecma_number_relative_eps;
|
||||
|
||||
extern ecma_number_t ecma_number_make_nan (void);
|
||||
extern ecma_number_t ecma_number_make_infinity (bool sign);
|
||||
extern bool ecma_number_is_nan (ecma_number_t num);
|
||||
@@ -141,6 +143,14 @@ extern int32_t ecma_number_get_fraction_and_exponent (ecma_number_t num,
|
||||
extern ecma_number_t ecma_number_make_normal_positive_from_fraction_and_exponent (uint64_t fraction,
|
||||
int32_t exponent);
|
||||
extern ecma_number_t ecma_number_negate (ecma_number_t num);
|
||||
extern ecma_number_t ecma_number_add (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_number_substract (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_number_multiply (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_number_divide (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_number_sqrt (ecma_number_t num);
|
||||
extern ecma_number_t ecma_number_abs (ecma_number_t num);
|
||||
extern ecma_number_t ecma_number_ln (ecma_number_t num);
|
||||
extern ecma_number_t ecma_number_exp (ecma_number_t num);
|
||||
|
||||
/* ecma-helpers-values-collection.c */
|
||||
|
||||
|
||||
@@ -441,7 +441,7 @@ ecma_op_array_object_define_own_property (ecma_object_t *obj_p, /**< the array o
|
||||
{
|
||||
// i., ii.
|
||||
ecma_number_t *num_p = ecma_alloc_number ();
|
||||
*num_p = ecma_op_number_add (ecma_uint32_to_number (index), ECMA_NUMBER_ONE);
|
||||
*num_p = ecma_number_add (ecma_uint32_to_number (index), ECMA_NUMBER_ONE);
|
||||
|
||||
ecma_free_value (len_prop_p->u.named_data_property.value, false);
|
||||
len_prop_p->u.named_data_property.value = ecma_make_number_value (num_p);
|
||||
|
||||
@@ -26,66 +26,6 @@
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* ECMA-defined number addition.
|
||||
*
|
||||
* See also:
|
||||
* ECMA-262 v5, 11.6.3
|
||||
*
|
||||
* @return number - result of addition.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_op_number_add (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return left_num + right_num;
|
||||
} /* ecma_op_number_add */
|
||||
|
||||
/**
|
||||
* ECMA-defined number substraction.
|
||||
*
|
||||
* See also:
|
||||
* ECMA-262 v5, 11.6.3
|
||||
*
|
||||
* @return number - result of substraction.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_op_number_substract (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return ecma_op_number_add (left_num, ecma_op_number_negate (right_num));
|
||||
} /* ecma_op_number_substract */
|
||||
|
||||
/**
|
||||
* ECMA-defined number multiplication.
|
||||
*
|
||||
* See also:
|
||||
* ECMA-262 v5, 11.5.1
|
||||
*
|
||||
* @return number - result of multiplication.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_op_number_multiply (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return left_num * right_num;
|
||||
} /* ecma_op_number_multiply */
|
||||
|
||||
/**
|
||||
* ECMA-defined number division.
|
||||
*
|
||||
* See also:
|
||||
* ECMA-262 v5, 11.5.2
|
||||
*
|
||||
* @return number - result of division.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_op_number_divide (ecma_number_t left_num, /**< left operand */
|
||||
ecma_number_t right_num) /**< right operand */
|
||||
{
|
||||
return left_num / right_num;
|
||||
} /* ecma_op_number_divide */
|
||||
|
||||
/**
|
||||
* ECMA-defined number remainder calculation.
|
||||
*
|
||||
@@ -123,7 +63,7 @@ ecma_op_number_remainder (ecma_number_t left_num, /**< left operand */
|
||||
&& !ecma_number_is_zero (d)
|
||||
&& !ecma_number_is_infinity (d));
|
||||
|
||||
ecma_number_t q = n / d;
|
||||
ecma_number_t q = ecma_number_divide (n, d);
|
||||
|
||||
uint64_t fraction;
|
||||
int32_t exponent;
|
||||
@@ -134,11 +74,8 @@ ecma_op_number_remainder (ecma_number_t left_num, /**< left operand */
|
||||
{
|
||||
return n;
|
||||
}
|
||||
else if (exponent >= dot_shift)
|
||||
{
|
||||
return n - d * q;
|
||||
}
|
||||
else
|
||||
|
||||
if (exponent < dot_shift)
|
||||
{
|
||||
fraction &= ~((1ull << (dot_shift - exponent)) - 1);
|
||||
|
||||
@@ -148,25 +85,11 @@ ecma_op_number_remainder (ecma_number_t left_num, /**< left operand */
|
||||
{
|
||||
q = ecma_number_negate (q);
|
||||
}
|
||||
|
||||
return n - d * q;
|
||||
}
|
||||
|
||||
return ecma_number_substract (n, ecma_number_multiply (d, q));
|
||||
} /* ecma_op_number_remainder */
|
||||
|
||||
/**
|
||||
* ECMA-defined number negation.
|
||||
*
|
||||
* See also:
|
||||
* ECMA-262 v5, 11.4.7
|
||||
*
|
||||
* @return number - result of negation.
|
||||
*/
|
||||
ecma_number_t
|
||||
ecma_op_number_negate (ecma_number_t num) /**< operand */
|
||||
{
|
||||
return -num;
|
||||
} /* ecma_op_number_negate */
|
||||
|
||||
/**
|
||||
* @}
|
||||
* @}
|
||||
|
||||
@@ -27,12 +27,7 @@
|
||||
* @{
|
||||
*/
|
||||
|
||||
extern ecma_number_t ecma_op_number_add (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_op_number_substract (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_op_number_multiply (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_op_number_divide (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_op_number_remainder (ecma_number_t left_num, ecma_number_t right_num);
|
||||
extern ecma_number_t ecma_op_number_negate (ecma_number_t num);
|
||||
|
||||
/**
|
||||
* @}
|
||||
|
||||
Reference in New Issue
Block a user