| /* | |
| +----------------------------------------------------------------------+ | |
| | Copyright (c) The PHP Group | | |
| +----------------------------------------------------------------------+ | |
| | This source file is subject to version 3.01 of the PHP license, | | |
| | that is bundled with this package in the file LICENSE, and is | | |
| | available through the world-wide-web at the following url: | | |
| | https://www.php.net/license/3_01.txt | | |
| | If you did not receive a copy of the PHP license and are unable to | | |
| | obtain it through the world-wide-web, please send a note to | | |
| | license@php.net so we can mail you a copy immediately. | | |
| +----------------------------------------------------------------------+ | |
| | Authors: Keyur Govande <kgovande@gmail.com> | | |
| +----------------------------------------------------------------------+ | |
| */ | |
| /* | |
| * Convert from a 4-byte float to a 8-byte decimal by first converting | |
| * the float to a string (ignoring localization), and then the string to a double. | |
| * The decimals argument specifies the precision of the output. If decimals | |
| * is less than zero, then a gcvt(3) like logic is used with the significant | |
| * digits set to FLT_DIG i.e. 6. | |
| */ | |
| static inline double mysql_float_to_double(float fp4, int decimals) { | |
| char num_buf[MAX_CHAR_BUF_LEN]; /* Over allocated */ | |
| if (decimals < 0) { | |
| zend_gcvt(fp4, FLT_DIG, '.', 'e', num_buf); | |
| } else { | |
| snprintf(num_buf, MAX_CHAR_BUF_LEN, "%.*F", decimals, fp4); | |
| } | |
| return zend_strtod(num_buf, NULL); | |
| } | |