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c8955c078a
Cf. <https://github.com/php/php-src/pull/10220#issuecomment-1383739816>. This reverts commitecc880f491. This reverts commit588a07f737. This reverts commitf377e15751. This reverts commitb4ba16fe18. This reverts commit694ec1deea. This reverts commit6b34de8eba. This reverts commitaa1cd02a43. This reverts commit308fd311ea. This reverts commit16203b53e1. This reverts commit738fb5ca54. This reverts commit9fdbefacd3. This reverts commitcd4a7c1d90. This reverts commit928685eba2. This reverts commit01e5ffc85c.
50 lines
1.8 KiB
C
50 lines
1.8 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: Keyur Govande <kgovande@gmail.com> |
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+----------------------------------------------------------------------+
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*/
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#ifndef MYSQL_FLOAT_TO_DOUBLE_H
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#define MYSQL_FLOAT_TO_DOUBLE_H
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#include "main/php.h"
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#include <float.h>
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#include "main/snprintf.h"
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#define MAX_CHAR_BUF_LEN 255
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#ifndef FLT_DIG
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# define FLT_DIG 6
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#endif
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/*
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* Convert from a 4-byte float to a 8-byte decimal by first converting
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* the float to a string (ignoring localization), and then the string to a double.
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* The decimals argument specifies the precision of the output. If decimals
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* is less than zero, then a gcvt(3) like logic is used with the significant
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* digits set to FLT_DIG i.e. 6.
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*/
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static inline double mysql_float_to_double(float fp4, int decimals) {
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char num_buf[MAX_CHAR_BUF_LEN]; /* Over allocated */
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if (decimals < 0) {
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zend_gcvt(fp4, FLT_DIG, '.', 'e', num_buf);
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} else {
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snprintf(num_buf, MAX_CHAR_BUF_LEN, "%.*F", decimals, fp4);
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}
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return zend_strtod(num_buf, NULL);
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}
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#endif /* MYSQL_FLOAT_TO_DOUBLE_H */
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