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* sysdeps/generic/s_ctan.c (__ctan): Likewise.

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* sysdeps/generic/s_ctanf.c (__ctanf): Likewise.
	* sysdeps/generic/s_ctanl.c (__ctanl): Likewise.
This commit is contained in:
Ulrich Drepper 2005-07-07 23:46:51 +00:00
parent 96191db217
commit 3b6c37d48c
4 changed files with 44 additions and 9 deletions
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3
ChangeLog
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@ -3,6 +3,9 @@
* sysdeps/generic/s_ctanh.c (__ctanh): Handle case of zero den better.
* sysdeps/generic/s_ctanhf.c (__ctanhf): Likewise.
* sysdeps/generic/s_ctanhl.c (__ctanhl): Likewise.
* sysdeps/generic/s_ctan.c (__ctan): Likewise.
* sysdeps/generic/s_ctanf.c (__ctanf): Likewise.
* sysdeps/generic/s_ctanl.c (__ctanl): Likewise.
2005-04-13 H.J. Lu <hongjiu.lu@intel.com>

16
sysdeps/generic/s_ctan.c
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@ -1,5 +1,5 @@
/* Complex tangent function for double.
Copyright (C) 1997 Free Software Foundation, Inc.
Copyright (C) 1997, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -61,8 +61,18 @@ __ctan (__complex__ double x)
den = cos2rx + __ieee754_cosh (2.0 * __imag__ x);
__real__ res = sin2rx / den;
__imag__ res = __ieee754_sinh (2.0 * __imag__ x) / den;
if (den == 0.0)
{
__complex__ double ez = __cexp (1.0i * x);
__complex__ double emz = __cexp (-1.0i * x);
res = (ez - emz) / (ez + emz) * -1.0i;
}
else
{
__real__ res = sin2rx / den;
__imag__ res = __ieee754_sinh (2.0 * __imag__ x) / den;
}
}
return res;

17
sysdeps/generic/s_ctanf.c
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@ -1,5 +1,5 @@
/* Complex tangent function for float.
Copyright (C) 1997 Free Software Foundation, Inc.
Copyright (C) 1997, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -61,8 +61,19 @@ __ctanf (__complex__ float x)
den = cos2rx + __ieee754_coshf (2.0 * __imag__ x);
__real__ res = sin2rx / den;
__imag__ res = __ieee754_sinhf (2.0 * __imag__ x) / den;
if (den == 0.0)
{
__complex__ float ez = __cexpf (1.0i * x);
__complex__ float emz = __cexpf (-1.0i * x);
res = (ez - emz) / (ez + emz) * -1.0i;
}
else
{
__real__ res = sin2rx / den;
__imag__ res = __ieee754_sinhf (2.0 * __imag__ x) / den;
}
}
return res;

17
sysdeps/generic/s_ctanl.c
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@ -1,5 +1,5 @@
/* Complex tangent function for long double.
Copyright (C) 1997 Free Software Foundation, Inc.
Copyright (C) 1997, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -61,8 +61,19 @@ __ctanl (__complex__ long double x)
den = cos2rx + __ieee754_coshl (2.0 * __imag__ x);
__real__ res = sin2rx / den;
__imag__ res = __ieee754_sinhl (2.0 * __imag__ x) / den;
if (den == 0.0)
{
__complex__ long double ez = __cexpl (1.0i * x);
__complex__ long double emz = __cexpl (-1.0i * x);
res = (ez - emz) / (ez + emz) * -1.0i;
}
else
{
__real__ res = sin2rx / den;
__imag__ res = __ieee754_sinhl (2.0 * __imag__ x) / den;
}
}
return res;