5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
48 lines
918 B
C
48 lines
918 B
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* IEEE754 floating point arithmetic
|
|
* single precision
|
|
*/
|
|
/*
|
|
* MIPS floating point support
|
|
* Copyright (C) 1994-2000 Algorithmics Ltd.
|
|
*/
|
|
|
|
#include "ieee754sp.h"
|
|
|
|
int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
|
|
{
|
|
int vx;
|
|
int vy;
|
|
|
|
COMPXSP;
|
|
COMPYSP;
|
|
|
|
EXPLODEXSP;
|
|
EXPLODEYSP;
|
|
FLUSHXSP;
|
|
FLUSHYSP;
|
|
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 ^ SP_SIGN_BIT;
|
|
if (vy < 0)
|
|
vy = -vy ^ SP_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;
|
|
}
|
|
}
|