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55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Saki Takamachi <saki@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "bcmath.h"
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#include "private.h"
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#include <stddef.h>
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bc_num bc_floor_or_ceil(bc_num num, bool is_floor)
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{
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/* Initialize result */
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bc_num result = bc_new_num(num->n_len, 0);
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result->n_sign = num->n_sign;
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/* copy integer part */
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memcpy(result->n_value, num->n_value, num->n_len);
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/* If the number is positive and we are flooring, then nothing else needs to be done.
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* Similarly, if the number is negative and we are ceiling, then nothing else needs to be done. */
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if (num->n_scale == 0 || result->n_sign == (is_floor ? PLUS : MINUS)) {
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return result;
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}
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/* check fractional part. */
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size_t count = num->n_scale;
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const char *nptr = num->n_value + num->n_len;
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while ((count > 0) && (*nptr == 0)) {
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count--;
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nptr++;
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}
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/* If all digits past the decimal point are 0 */
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if (count == 0) {
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return result;
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}
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/* Increment the absolute value of the result by 1 and add sign information */
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bc_num tmp = _bc_do_add(result, BCG(_one_), 0);
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tmp->n_sign = result->n_sign;
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bc_free_num(&result);
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return tmp;
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}
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