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47 lines
936 B
47 lines
936 B
// 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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