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Optimization to some complex math functions

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Also, change last reference to __sqrt into __sqrt to easily.
This commit is contained in:
Ulrich Drepper
2011-10-22 00:32:39 -04:00
parent c196fed8f0
commit bc62c2fb15
23 changed files with 132 additions and 258 deletions
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26
math/s_csinh.c
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@ -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