48 lines
936 B
C
48 lines
936 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/* IEEE754 floating point arithmetic
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* double precision: common utilities
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*/
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/*
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* MIPS floating point support
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* Copyright (C) 1994-2000 Algorithmics Ltd.
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*/
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#include "ieee754dp.h"
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int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
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{
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s64 vx;
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s64 vy;
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COMPXDP;
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COMPYDP;
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EXPLODEXDP;
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EXPLODEYDP;
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FLUSHXDP;
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FLUSHYDP;
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ieee754_clearcx(); /* Even clear inexact flag here */
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if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) {
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if (sig ||
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xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
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ieee754_setcx(IEEE754_INVALID_OPERATION);
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return (cmp & IEEE754_CUN) != 0;
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} else {
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vx = x.bits;
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vy = y.bits;
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if (vx < 0)
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vx = -vx ^ DP_SIGN_BIT;
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if (vy < 0)
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vy = -vy ^ DP_SIGN_BIT;
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if (vx < vy)
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return (cmp & IEEE754_CLT) != 0;
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else if (vx == vy)
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return (cmp & IEEE754_CEQ) != 0;
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else
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return (cmp & IEEE754_CGT) != 0;
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}
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}
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