4073a59300
casinhl.c catanl.c catanhl.c ccosl.c ccoshl.c cexpl.c cimagl.c clogl.c cpowl.c cprojl.c creall.c csinl.c csinhl.c csqrtl.c ctanl.c ctanhl.c): New files. * mingwex/Makefile.in (COMPLEX_DISTFILES): Adjust. (COMPLEX_OBJS): Adjust. * include/complex.h (cabsl, cacosl, cacoshl, cargl, casinf. casinhl, catanl, catanhl, ccosl, ccoshl, cexpl, cimagl, clogl, cpowl, cprojl, creall, csinl, csinhl, csqrtl, ctanl, ctanhl): Declare.
45 lines
823 B
C
Executable File
45 lines
823 B
C
Executable File
/* ctanhl.c */
|
|
|
|
/*
|
|
Contributed by Danny Smith
|
|
2005-01-04
|
|
*/
|
|
|
|
|
|
#include <math.h>
|
|
#include <complex.h>
|
|
#include <errno.h>
|
|
|
|
/*
|
|
ctanh (x + I * y) = (sinh (2 * x) + sin (2 * y) * I )
|
|
/ (cosh (2 * x) + cos (2 * y)) .
|
|
*/
|
|
|
|
long double complex
|
|
ctanhl (long double complex Z)
|
|
{
|
|
long double complex Res;
|
|
long double two_R = 2.0L * __real__ Z;
|
|
long double two_I = 2.0L * __imag__ Z;
|
|
long double denom = coshl (two_R) + cosl (two_I);
|
|
|
|
if (denom == 0.0L)
|
|
{
|
|
errno = ERANGE;
|
|
__real__ Res = HUGE_VALL;
|
|
__imag__ Res = HUGE_VALL;
|
|
}
|
|
else if (isinf (denom))
|
|
{
|
|
errno = ERANGE;
|
|
__real__ Res = two_R > 0 ? 1.0L : -1.0L;
|
|
__imag__ Res = 0.0L;
|
|
}
|
|
else
|
|
{
|
|
__real__ Res = sinhl (two_R) / denom;
|
|
__imag__ Res = sinl (two_I) / denom;
|
|
}
|
|
return Res;
|
|
}
|