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44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 2003 Sascha Schumann |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend 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@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Sascha Schumann <sascha@schumann.cx> |
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+----------------------------------------------------------------------+
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*/
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#if defined(__i386__) && defined(__GNUC__)
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#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \
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__asm__ ("imul %3,%0\n" \
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"adc $0,%1" \
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: "=r"(lval),"=r"(usedval) \
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: "0"(a), "r"(b), "1"(0)); \
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if (usedval) (dval) = (double) (a) * (double) (b); \
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} while (0)
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#else
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#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \
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double __tmpvar = (double) (a) * (double) (b); \
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\
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if (__tmpvar >= LONG_MAX || __tmpvar <= LONG_MIN) { \
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(dval) = __tmpvar; \
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(usedval) = 1; \
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} else { \
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(lval) = (a) * (b); \
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(usedval) = 0; \
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} \
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} while (0)
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#endif
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