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authorUlrich Drepper <drepper@gmail.com>2011-10-22 00:32:39 -0400
committerUlrich Drepper <drepper@gmail.com>2011-10-22 00:32:39 -0400
commitbc62c2fb152d6ffec63975d88fd8f1bc3d3b7c01 (patch)
treebbb67e94ed1a9ba0becbe752c6853c199c639070 /math/s_csinh.c
parentc196fed8f01a8599dd43edf1c7a1ea3ba9ed0598 (diff)
downloadglibc-bc62c2fb152d6ffec63975d88fd8f1bc3d3b7c01.tar.gz
Optimization to some complex math functions
Also, change last reference to __sqrt into __sqrt to easily.
Diffstat (limited to 'math/s_csinh.c')
-rw-r--r--math/s_csinh.c26
1 files changed, 10 insertions, 16 deletions
diff --git a/math/s_csinh.c b/math/s_csinh.c
index 138d80505e..2eec065a8f 100644
--- a/math/s_csinh.c
+++ b/math/s_csinh.c
@@ -1,5 +1,5 @@
/* Complex sine hyperbole function for double.
- Copyright (C) 1997 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -35,10 +35,10 @@ __csinh (__complex__ double x)
__real__ x = fabs (__real__ x);
- if (rcls >= FP_ZERO)
+ if (__builtin_expect (rcls >= FP_ZERO, 1))
{
/* Real part is finite. */
- if (icls >= FP_ZERO)
+ if (__builtin_expect (icls >= FP_ZERO, 1))
{
/* Imaginary part is finite. */
double sinh_val = __ieee754_sinh (__real__ x);
@@ -61,32 +61,22 @@ __csinh (__complex__ double x)
__real__ retval = __copysign (0.0, negate ? -1.0 : 1.0);
__imag__ retval = __nan ("") + __nan ("");
-#ifdef FE_INVALID
if (icls == FP_INFINITE)
feraiseexcept (FE_INVALID);
-#endif
}
else
{
__real__ retval = __nan ("");
__imag__ retval = __nan ("");
-#ifdef FE_INVALID
feraiseexcept (FE_INVALID);
-#endif
}
}
}
else if (rcls == FP_INFINITE)
{
/* Real part is infinite. */
- if (icls == FP_ZERO)
- {
- /* Imaginary part is 0.0. */
- __real__ retval = negate ? -HUGE_VAL : HUGE_VAL;
- __imag__ retval = __imag__ x;
- }
- else if (icls > FP_ZERO)
+ if (__builtin_expect (icls > FP_ZERO, 1))
{
/* Imaginary part is finite. */
double sinix, cosix;
@@ -99,16 +89,20 @@ __csinh (__complex__ double x)
if (negate)
__real__ retval = -__real__ retval;
}
+ else if (icls == FP_ZERO)
+ {
+ /* Imaginary part is 0.0. */
+ __real__ retval = negate ? -HUGE_VAL : HUGE_VAL;
+ __imag__ retval = __imag__ x;
+ }
else
{
/* The addition raises the invalid exception. */
__real__ retval = HUGE_VAL;
__imag__ retval = __nan ("") + __nan ("");
-#ifdef FE_INVALID
if (icls == FP_INFINITE)
feraiseexcept (FE_INVALID);
-#endif
}
}
else