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Optimize use of isnan, isinf, finite

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This commit is contained in:
Ulrich Drepper
2011-10-08 10:18:26 -04:00
parent 187da0aedc
commit 7edb55ce06
35 changed files with 236 additions and 63 deletions
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16
math/divtc3.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
/* Copyright (C) 2005, 2006, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@redhat.com>, 2005.
@ -55,17 +55,19 @@ __divtc3 (long double a, long double b, long double c, long double d)
x = __copysignl (INFINITY, c) * a;
y = __copysignl (INFINITY, c) * b;
}
else if ((isinf (a) || isinf (b)) && isfinite (c) && isfinite (d))
else if ((__isinf_nsl (a) || __isinf_nsl (b))
&& isfinite (c) && isfinite (d))
{
a = __copysignl (isinf (a) ? 1 : 0, a);
b = __copysignl (isinf (b) ? 1 : 0, b);
a = __copysignl (__isinf_nsl (a) ? 1 : 0, a);
b = __copysignl (__isinf_nsl (b) ? 1 : 0, b);
x = INFINITY * (a * c + b * d);
y = INFINITY * (b * c - a * d);
}
else if ((isinf (c) || isinf (d)) && isfinite (a) && isfinite (b))
else if ((__isinf_nsl (c) || __isinf_nsl (d))
&& isfinite (a) && isfinite (b))
{
c = __copysignl (isinf (c) ? 1 : 0, c);
d = __copysignl (isinf (d) ? 1 : 0, d);
c = __copysignl (__isinf_nsl (c) ? 1 : 0, c);
d = __copysignl (__isinf_nsl (d) ? 1 : 0, d);
x = 0.0 * (a * c + b * d);
y = 0.0 * (b * c - a * d);
}