Ruben Ayrapetyan
3eed2d0d4c
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.
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/* Copyright 2014 Samsung Electronics Co., Ltd.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "ecma-globals.h"
|
|
#include "ecma-helpers.h"
|
|
#include "ecma-number-arithmetic.h"
|
|
|
|
/** \addtogroup ecma ECMA
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \addtogroup numberarithmetic ECMA number arithmetic operations
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* ECMA-defined number remainder calculation.
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 11.5.3
|
|
*
|
|
* @return number - calculated remainder.
|
|
*/
|
|
ecma_number_t
|
|
ecma_op_number_remainder (ecma_number_t left_num, /**< left operand */
|
|
ecma_number_t right_num) /**< right operand */
|
|
{
|
|
TODO (Check precision);
|
|
|
|
ecma_number_t n = left_num, d = right_num;
|
|
|
|
if (ecma_number_is_nan (n)
|
|
|| ecma_number_is_nan (d)
|
|
|| ecma_number_is_infinity (n)
|
|
|| ecma_number_is_zero (d))
|
|
{
|
|
return ecma_number_make_nan ();
|
|
}
|
|
else if (ecma_number_is_infinity (d)
|
|
|| (ecma_number_is_zero (n)
|
|
&& !ecma_number_is_zero (d)))
|
|
{
|
|
return n;
|
|
}
|
|
|
|
JERRY_ASSERT (!ecma_number_is_nan (n)
|
|
&& !ecma_number_is_zero (n)
|
|
&& !ecma_number_is_infinity (n));
|
|
JERRY_ASSERT (!ecma_number_is_nan (d)
|
|
&& !ecma_number_is_zero (d)
|
|
&& !ecma_number_is_infinity (d));
|
|
|
|
ecma_number_t q = ecma_number_divide (n, d);
|
|
|
|
uint64_t fraction;
|
|
int32_t exponent;
|
|
const int32_t dot_shift = ecma_number_get_fraction_and_exponent (q, &fraction, &exponent);
|
|
const bool sign = ecma_number_is_negative (q);
|
|
|
|
if (exponent < 0)
|
|
{
|
|
return n;
|
|
}
|
|
|
|
if (exponent < dot_shift)
|
|
{
|
|
fraction &= ~((1ull << (dot_shift - exponent)) - 1);
|
|
|
|
q = ecma_number_make_normal_positive_from_fraction_and_exponent (fraction,
|
|
exponent);
|
|
if (sign)
|
|
{
|
|
q = ecma_number_negate (q);
|
|
}
|
|
}
|
|
|
|
return ecma_number_substract (n, ecma_number_multiply (d, q));
|
|
} /* ecma_op_number_remainder */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|