晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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/*
   +----------------------------------------------------------------------+
   | 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: Jim Winstead <jimw@php.net>                                 |
   |          Stig Sæther Bakken <ssb@php.net>                            |
   +----------------------------------------------------------------------+
*/

#include "php.h"

/* Define rounding modes (all are round-to-nearest) */
#ifndef PHP_ROUND_HALF_UP
#define PHP_ROUND_HALF_UP        0x01    /* Arithmetic rounding, up == away from zero */
#endif

#ifndef PHP_ROUND_HALF_DOWN
#define PHP_ROUND_HALF_DOWN      0x02    /* Arithmetic rounding, down == towards zero */
#endif

#ifndef PHP_ROUND_HALF_EVEN
#define PHP_ROUND_HALF_EVEN      0x03    /* Banker's rounding */
#endif

#ifndef PHP_ROUND_HALF_ODD
#define PHP_ROUND_HALF_ODD       0x04
#endif

#ifndef PHP_ROUND_CEILING
#define PHP_ROUND_CEILING        0x05
#endif

#ifndef PHP_ROUND_FLOOR
#define PHP_ROUND_FLOOR          0x06
#endif

#ifndef PHP_ROUND_TOWARD_ZERO
#define PHP_ROUND_TOWARD_ZERO    0x07
#endif

#ifndef PHP_ROUND_AWAY_FROM_ZERO
#define PHP_ROUND_AWAY_FROM_ZERO 0x08
#endif

extern PHPAPI zend_class_entry *rounding_mode_ce;

PHPAPI int php_math_round_mode_from_enum(zend_object *mode);