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Implement exponentiation operation. (#3692)

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-04-27 11:43:35 +02:00
committed by GitHub
parent daeee77d63
commit 4e8dac8ce1
18 changed files with 319 additions and 32 deletions
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jerry-core/ecma/base/ecma-helpers-number.c
+27
View File
@@ -13,6 +13,8 @@
* limitations under the License.
*/
#include <math.h>
#include "ecma-conversion.h"
#include "lit-char-helpers.h"
@@ -656,6 +658,31 @@ ecma_number_calc_remainder (ecma_number_t left_num, /**< left operand */
return r;
} /* ecma_number_calc_remainder */
/**
* Compute power operation according to the ES standard.
*
* @return x ** y
*/
ecma_number_t
ecma_number_pow (ecma_number_t x, /**< left operand */
ecma_number_t y) /**< right operand */
{
if (ecma_number_is_nan (y) ||
(ecma_number_is_infinity (y) && (x == 1.0 || x == -1.0)))
{
/* Handle differences between ES5.1 and ISO C standards for pow. */
return ecma_number_make_nan ();
}
if (ecma_number_is_zero (y))
{
/* Handle differences between ES5.1 and ISO C standards for pow. */
return (ecma_number_t) 1.0;
}
return DOUBLE_TO_ECMA_NUMBER_T (pow (x, y));
} /* ecma_number_pow */
/**
* ECMA-integer number multiplication.
*
jerry-core/ecma/base/ecma-helpers.h
+1
View File
@@ -400,6 +400,7 @@ ecma_number_t ecma_number_get_prev (ecma_number_t num);
ecma_number_t ecma_number_get_next (ecma_number_t num);
ecma_number_t ecma_number_trunc (ecma_number_t num);
ecma_number_t ecma_number_calc_remainder (ecma_number_t left_num, ecma_number_t right_num);
ecma_number_t ecma_number_pow (ecma_number_t x, ecma_number_t y);
ecma_value_t ecma_number_parse_int (const lit_utf8_byte_t *string_buff,
lit_utf8_size_t string_buff_size,
ecma_value_t radix);
jerry-core/ecma/builtin-objects/ecma-builtin-math.c
+1 -15
View File
@@ -505,21 +505,7 @@ ecma_builtin_math_dispatch_routine (uint16_t builtin_routine_id, /**< built-in w
}
case ECMA_MATH_OBJECT_POW:
{
if (ecma_number_is_nan (y) ||
(ecma_number_is_infinity (y) && (x == 1.0 || x == -1.0)))
{
/* Handle differences between ES5.1 and ISO C standards for pow. */
x = ecma_number_make_nan ();
}
else if (ecma_number_is_zero (y))
{
/* Handle differences between ES5.1 and ISO C standards for pow. */
x = (ecma_number_t) 1.0;
}
else
{
x = DOUBLE_TO_ECMA_NUMBER_T (pow (x, y));
}
x = ecma_number_pow (x, y);
break;
}
#if ENABLED (JERRY_ES2015)