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.
67 lines
1.2 KiB
C
Executable File
67 lines
1.2 KiB
C
Executable File
/*
|
|
cacosl.c
|
|
Contributed by Danny Smith
|
|
2004-01-04
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include <complex.h>
|
|
|
|
#if 0
|
|
/* cacos (Z) = -I * clog(Z + I * csqrt(1 - Z * Z)) */
|
|
|
|
long double complex cacosl (long double complex Z)
|
|
{
|
|
long double complex Res;
|
|
long double x, y;
|
|
|
|
x = __real__ Z;
|
|
y = __imag__ Z;
|
|
|
|
if (y == 0.0L)
|
|
{
|
|
__real__ Res = acosl (x);
|
|
__imag__ Res = 0.0L;
|
|
}
|
|
|
|
else
|
|
{
|
|
long double complex ZZ;
|
|
/* Z * Z = ((x - y) * (x + y)) + (2.0 * x * y) * I */
|
|
/* caculate 1 - Z * Z */
|
|
__real__ ZZ = 1.0L - (x - y) * (x + y);
|
|
__imag__ ZZ = -2.0L * x * y;
|
|
|
|
|
|
Res = csqrtl(ZZ);
|
|
|
|
/* calculate ZZ + I * sqrt (ZZ) */
|
|
|
|
__real__ ZZ = x - __imag__ Res;
|
|
__imag__ ZZ = y + __real__ Res;
|
|
|
|
ZZ = clogl(ZZ);
|
|
|
|
/* mult by -I */
|
|
|
|
__real__ Res = __imag__ ZZ;
|
|
__imag__ Res = - __real__ ZZ;
|
|
}
|
|
return Res;
|
|
}
|
|
|
|
#else
|
|
|
|
/* cacos ( Z ) = pi/2 - casin ( Z ) */
|
|
#ifndef _M_PI_2L
|
|
#define _M_PI_2L 1.5707963267948966192313L
|
|
#endif
|
|
long double complex cacosl (long double complex Z)
|
|
{
|
|
long double complex Res = casinl (Z);
|
|
__real__ Res = _M_PI_2L - __real__ Res;
|
|
__imag__ Res = - __imag__ Res;
|
|
return Res;
|
|
}
|
|
#endif
|