曾与蒿藜同雨露，한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.かつては雑草やヨモギと共に雨や露を分かち合っていたが、今では松やヒノキと共に霜や雪に耐えている。曾与蒿藜同雨露，Once sharing rain and dew with weeds and wormwood, now enduring frost and snow with pines and cypresses.终随松柏到冰霜.曾与蒿藜同雨露한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.，终随松柏到冰霜.譖ｾ荳手珍阯懷酔髮ｨ髴ｲ�檎ｻ磯囂譚ｾ譟丞芦蜀ｰ髴�曾与蒿藜同雨露，鏇句笌钂胯棞鍚岄洦闇诧紝缁堥殢鏉炬煆鍒板啺闇�终随松柏到冰霜.曾与蒿藜同雨露，한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.曾与蒿藜同雨露，终随松柏到冰霜. rahbord-ins.ir - GrazzMean-Shell
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name : zend_multiply.h 
/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Sascha Schumann <sascha@schumann.cx>                        |
   |          Ard Biesheuvel <ard.biesheuvel@linaro.org>                  |
   +----------------------------------------------------------------------+
*/

#include "zend_portability.h"

#ifndef ZEND_MULTIPLY_H
#define ZEND_MULTIPLY_H

#if PHP_HAVE_BUILTIN_SMULL_OVERFLOW && SIZEOF_LONG == SIZEOF_ZEND_LONG

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	long __tmpvar;		 											\
	if (((usedval) = __builtin_smull_overflow((a), (b), &__tmpvar))) {	\
		(dval) = (double) (a) * (double) (b);						\
	}																\
	else (lval) = __tmpvar;											\
} while (0)

#elif PHP_HAVE_BUILTIN_SMULLL_OVERFLOW && SIZEOF_LONG_LONG == SIZEOF_ZEND_LONG

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	long long __tmpvar; 											\
	if (((usedval) = __builtin_smulll_overflow((a), (b), &__tmpvar))) {	\
		(dval) = (double) (a) * (double) (b);						\
	}																\
	else (lval) = __tmpvar;											\
} while (0)

#elif (defined(__i386__) || defined(__x86_64__)) && defined(__GNUC__)

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	zend_long __tmpvar; 													\
	__asm__ ("imul %3,%0\n"											\
		"adc $0,%1" 												\
			: "=r"(__tmpvar),"=r"(usedval) 							\
			: "0"(a), "r"(b), "1"(0));								\
	if (usedval) (dval) = (double) (a) * (double) (b);				\
	else (lval) = __tmpvar;											\
} while (0)

#elif defined(__arm__) && defined(__GNUC__)

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	zend_long __tmpvar; 													\
	__asm__("smull %0, %1, %2, %3\n"								\
		"sub %1, %1, %0, asr #31"									\
			: "=r"(__tmpvar), "=r"(usedval)							\
			: "r"(a), "r"(b));										\
	if (usedval) (dval) = (double) (a) * (double) (b);				\
	else (lval) = __tmpvar;											\
} while (0)

#elif defined(__aarch64__) && defined(__GNUC__)

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	zend_long __tmpvar; 													\
	__asm__("mul %0, %2, %3\n"										\
		"smulh %1, %2, %3\n"										\
		"sub %1, %1, %0, asr #63\n"									\
			: "=&r"(__tmpvar), "=&r"(usedval)						\
			: "r"(a), "r"(b));										\
	if (usedval) (dval) = (double) (a) * (double) (b);				\
	else (lval) = __tmpvar;											\
} while (0)

#elif defined(ZEND_WIN32)

# ifdef _M_X64
#  pragma intrinsic(_mul128)
#  define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {       \
	__int64 __high; \
	__int64 __low = _mul128((a), (b), &__high); \
	if ((__low >> 63I64) == __high) { \
		(usedval) = 0; \
		(lval) = __low; \
	} else { \
		(usedval) = 1; \
		(dval) = (double)(a) * (double)(b); \
	} \
} while (0)
# elif defined(_M_ARM64)
#  pragma intrinsic(__mulh)
#  define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {       \
	__int64 __high = __mulh((a), (b)); \
	__int64 __low  = (a) * (b); \
	if ((__low >> 63I64) == __high) { \
		(usedval) = 0; \
		(lval) = __low; \
	} else { \
		(usedval) = 1; \
		(dval) = (double)(a) * (double)(b); \
	} \
} while (0)
# else
#  define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	zend_long   __lres  = (a) * (b);										\
	long double __dres  = (long double)(a) * (long double)(b);		\
	long double __delta = (long double) __lres - __dres;			\
	if ( ((usedval) = (( __dres + __delta ) != __dres))) {			\
		(dval) = __dres;											\
	} else {														\
		(lval) = __lres;											\
	}																\
} while (0)
# endif

#elif defined(__powerpc64__) && defined(__GNUC__)

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	long __low, __high;						\
	__asm__("mulld %0,%2,%3\n\t"					\
		"mulhd %1,%2,%3\n"					\
		: "=&r"(__low), "=&r"(__high)				\
		: "r"(a), "r"(b));					\
	if ((__low >> 63) != __high) {					\
		(dval) = (double) (a) * (double) (b);			\
		(usedval) = 1;						\
	} else {							\
		(lval) = __low;						\
		(usedval) = 0;						\
	}								\
} while (0)

#elif SIZEOF_ZEND_LONG == 4

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	int64_t __result = (int64_t) (a) * (int64_t) (b);				\
	if (__result > ZEND_LONG_MAX || __result < ZEND_LONG_MIN) {		\
		(dval) = (double) __result;									\
		(usedval) = 1;												\
	} else {														\
		(lval) = (long) __result;									\
		(usedval) = 0;												\
	}																\
} while (0)

#else

#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
	long   __lres  = (a) * (b);										\
	long double __dres  = (long double)(a) * (long double)(b);		\
	long double __delta = (long double) __lres - __dres;			\
	if ( ((usedval) = (( __dres + __delta ) != __dres))) {			\
		(dval) = __dres;											\
	} else {														\
		(lval) = __lres;											\
	}																\
} while (0)

#endif

#if defined(__GNUC__) && (defined(__native_client__) || defined(i386))

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
	size_t res = nmemb;
	size_t m_overflow = 0;

	if (ZEND_CONST_COND(offset == 0, 0)) {
		__asm__ ("mull %3\n\tadcl $0,%1"
	     : "=&a"(res), "=&d" (m_overflow)
	     : "%0"(res),
	       "rm"(size));
	} else {
		__asm__ ("mull %3\n\taddl %4,%0\n\tadcl $0,%1"
	     : "=&a"(res), "=&d" (m_overflow)
	     : "%0"(res),
	       "rm"(size),
	       "rm"(offset));
	}

	if (UNEXPECTED(m_overflow)) {
		*overflow = 1;
		return 0;
	}
	*overflow = 0;
	return res;
}

#elif defined(__GNUC__) && defined(__x86_64__)

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
	size_t res = nmemb;
	zend_ulong m_overflow = 0;

#ifdef __ILP32__ /* x32 */
# define LP_SUFF "l"
#else /* amd64 */
# define LP_SUFF "q"
#endif

	if (ZEND_CONST_COND(offset == 0, 0)) {
		__asm__ ("mul" LP_SUFF  " %3\n\t"
			"adc $0,%1"
			: "=&a"(res), "=&d" (m_overflow)
			: "%0"(res),
			  "rm"(size));
	} else {
		__asm__ ("mul" LP_SUFF  " %3\n\t"
			"add %4,%0\n\t"
			"adc $0,%1"
			: "=&a"(res), "=&d" (m_overflow)
			: "%0"(res),
			  "rm"(size),
			  "rm"(offset));
	}
#undef LP_SUFF
	if (UNEXPECTED(m_overflow)) {
		*overflow = 1;
		return 0;
	}
	*overflow = 0;
	return res;
}

#elif defined(__GNUC__) && defined(__arm__)

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
	size_t res;
	zend_ulong m_overflow;

	__asm__ ("umlal %0,%1,%2,%3"
		: "=r"(res), "=r"(m_overflow)
		: "r"(nmemb),
		  "r"(size),
		  "0"(offset),
		  "1"(0));

	if (UNEXPECTED(m_overflow)) {
		*overflow = 1;
		return 0;
	}
	*overflow = 0;
	return res;
}

#elif defined(__GNUC__) && defined(__aarch64__)

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
	size_t res;
	zend_ulong m_overflow;

	__asm__ ("mul %0,%2,%3\n\tumulh %1,%2,%3\n\tadds %0,%0,%4\n\tadc %1,%1,xzr"
		: "=&r"(res), "=&r"(m_overflow)
		: "r"(nmemb),
		  "r"(size),
		  "r"(offset));

	if (UNEXPECTED(m_overflow)) {
		*overflow = 1;
		return 0;
	}
	*overflow = 0;
	return res;
}

#elif defined(__GNUC__) && defined(__powerpc64__)

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
        size_t res;
        unsigned long m_overflow;

        __asm__ ("mulld %0,%2,%3\n\t"
                 "mulhdu %1,%2,%3\n\t"
                 "addc %0,%0,%4\n\t"
                 "addze %1,%1\n"
             : "=&r"(res), "=&r"(m_overflow)
             : "r"(nmemb),
               "r"(size),
               "r"(offset));

        if (UNEXPECTED(m_overflow)) {
                *overflow = 1;
                return 0;
        }
        *overflow = 0;
        return res;
}

#elif SIZEOF_SIZE_T == 4

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
	uint64_t res = (uint64_t) nmemb * (uint64_t) size + (uint64_t) offset;

	if (UNEXPECTED(res > UINT64_C(0xFFFFFFFF))) {
		*overflow = 1;
		return 0;
	}
	*overflow = 0;
	return (size_t) res;
}

#else

static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow)
{
	size_t res = nmemb * size + offset;
	double _d  = (double)nmemb * (double)size + (double)offset;
	double _delta = (double)res - _d;

	if (UNEXPECTED((_d + _delta ) != _d)) {
		*overflow = 1;
		return 0;
	}
	*overflow = 0;
	return res;
}
#endif

static zend_always_inline size_t zend_safe_address_guarded(size_t nmemb, size_t size, size_t offset)
{
	bool overflow;
	size_t ret = zend_safe_address(nmemb, size, offset, &overflow);

	if (UNEXPECTED(overflow)) {
		zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (%zu * %zu + %zu)", nmemb, size, offset);
		return 0;
	}
	return ret;
}

/* A bit more generic version of the same */
static zend_always_inline size_t zend_safe_addmult(size_t nmemb, size_t size, size_t offset, const char *message)
{
	bool overflow;
	size_t ret = zend_safe_address(nmemb, size, offset, &overflow);

	if (UNEXPECTED(overflow)) {
		zend_error_noreturn(E_ERROR, "Possible integer overflow in %s (%zu * %zu + %zu)", message, nmemb, size, offset);
		return 0;
	}
	return ret;
}

#endif /* ZEND_MULTIPLY_H */
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