The following patch fixes the emulation of cvt.w.s and cvt.w.d for
values of -2147483648.
--Mark
Index: sp_tint.c
===================================================================
RCS file: /cvs/linux/arch/mips/math-emu/sp_tint.c,v
retrieving revision 1.4
diff -u -p -5 -c -r1.4 sp_tint.c
cvs server: conflicting specifications of output style
*** sp_tint.c 2001/10/09 23:56:19 1.4
--- sp_tint.c 2001/11/29 19:14:58
*************** int ieee754sp_tint(ieee754sp x)
*** 48,57 ****
--- 48,60 ----
case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM:
break;
}
if (xe >= 31) {
+ /* look for valid corner case */
+ if (xe == 31 && xs && xm == SP_HIDDEN_BIT)
+ return -2147483648;
/* Set invalid. We will only use overflow for floating
point overflow */
SETCX(IEEE754_INVALID_OPERATION);
return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
}
Index: dp_tint.c
===================================================================
RCS file: /cvs/linux/arch/mips/math-emu/dp_tint.c,v
retrieving revision 1.4
diff -u -p -5 -c -r1.4 dp_tint.c
cvs server: conflicting specifications of output style
*** dp_tint.c 2001/10/09 23:56:18 1.4
--- dp_tint.c 2001/11/29 19:18:02
*************** int ieee754dp_tint(ieee754dp x)
*** 48,57 ****
--- 48,60 ----
case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM:
break;
}
if (xe >= 31) {
+ /* look for valid corner case */
+ if (xe == 31 && xs && xm == DP_HIDDEN_BIT)
+ return -2147483648;
/* Set invalid. We will only use overflow for floating
point overflow */
SETCX(IEEE754_INVALID_OPERATION);
return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
}
