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(feraiseexcept): Use a dummy for FE_DIVBYZERO. Kludge for

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FE_UNDERFLOW.
This commit is contained in:
Ulrich Drepper 1998-02-26 16:29:41 +00:00
parent d424955575
commit f635bc2865
1 changed files with 6 additions and 5 deletions
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11
sysdeps/alpha/fpu/fraiseexcpt.c
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@ -1,5 +1,5 @@
/* Raise given exceptions.
Copyright (C) 1997 Free Software Foundation, Inc.
Copyright (C) 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@tamu.edu>, 1997.
@ -24,7 +24,7 @@
void
feraiseexcept (int excepts)
{
double tmp;
double tmp, dummy;
/* Raise exceptions represented by EXPECTS. But we must raise only
one signal at a time. It is important the if the overflow/underflow
@ -45,8 +45,8 @@ feraiseexcept (int excepts)
/* Next: division by zero. */
if (FE_DIVBYZERO & excepts)
{
__asm__ __volatile__("cmpteq $f31,$f31,%0; divt/sui %0,$f31,%0; trapb"
: "=f"(tmp));
__asm__ __volatile__("cmpteq $f31,$f31,%1; divt/sui %1,$f31,%0; trapb"
: "=f"(tmp), "=f"(dummy));
}
/* Next: overflow. */
@ -60,7 +60,8 @@ feraiseexcept (int excepts)
if (FE_UNDERFLOW & excepts)
{
__asm__ __volatile__("divt/sui %1,%2,%0; trapb"
: "=f"(tmp) : "f"(DBL_MIN), "f"(16.0));
: "=f"(tmp) : "f"(DBL_MIN),
"f"((double) (1UL << 60)));
}
/* Last: inexact. */