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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/math-emu/dp_cmp.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/math-emu/dp_cmp.c')
-rw-r--r-- | arch/mips/math-emu/dp_cmp.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/mips/math-emu/dp_cmp.c b/arch/mips/math-emu/dp_cmp.c new file mode 100644 index 000000000..a59680b03 --- /dev/null +++ b/arch/mips/math-emu/dp_cmp.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* IEEE754 floating point arithmetic + * double precision: common utilities + */ +/* + * MIPS floating point support + * Copyright (C) 1994-2000 Algorithmics Ltd. + */ + +#include "ieee754dp.h" + +int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig) +{ + s64 vx; + s64 vy; + + COMPXDP; + COMPYDP; + + EXPLODEXDP; + EXPLODEYDP; + FLUSHXDP; + FLUSHYDP; + ieee754_clearcx(); /* Even clear inexact flag here */ + + if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) { + if (sig || + xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN) + ieee754_setcx(IEEE754_INVALID_OPERATION); + return (cmp & IEEE754_CUN) != 0; + } else { + vx = x.bits; + vy = y.bits; + + if (vx < 0) + vx = -vx ^ DP_SIGN_BIT; + if (vy < 0) + vy = -vy ^ DP_SIGN_BIT; + + if (vx < vy) + return (cmp & IEEE754_CLT) != 0; + else if (vx == vy) + return (cmp & IEEE754_CEQ) != 0; + else + return (cmp & IEEE754_CGT) != 0; + } +} |