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* mingwex/complex/(cabsf.c cacosf.c cacoshf.c cargf.c casinf.c

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casinhf.c catanf.c catanhf.c ccosf.c ccoshf.c cexpf.c cimagf.c
	clogf.c cpowf.c cprojf.c crealf.c csinf.c csinhf.c csqrtf.c
	ctanf.c ctanhf.c): New files.
	* mingwex/Makefile.in (COMPLEX_DISTFILES): Adjust.
	(COMPLEX_OBJS(: Adjust.
	* include/complex.h (cabsf, cacosf, cacoshf, cargf, casinf.
	casinhf, catanf, catanhf, ccosf, ccoshf, cexpf, cimagf, clogf,
	cpowf, cprojf, crealf, csinf, csinhf, csqrtf, ctanf, ctanhf):
	Declare.
This commit is contained in:
Danny Smith
2004-12-25 23:56:19 +00:00
parent c98b30eadc
commit 9a3412eea8
24 changed files with 663 additions and 7 deletions
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48
winsup/mingw/mingwex/complex/casinf.c Executable file
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/*
casinf.c
Contributed by Danny Smith
2004-12-24
*/
#include <math.h>
#include <complex.h>
/* casin (Z ) = -I * clog(I * Z + csqrt (1.0 - Z * Z))) */
float complex casinf (float complex Z)
{
float complex Res;
float x, y;
x = __real__ Z;
y = __imag__ Z;
if (y == 0.0f)
{
__real__ Res = asinf (x);
__imag__ Res = 0.0f;
}
else /* -I * clog(I * Z + csqrt(1.0 - Z * Z))) */
{
float complex ZZ;
/* Z * Z = ((x - y) * (x + y)) + (2.0 * x * y) * I */
/* calculate 1 - Z * Z */
__real__ ZZ = 1.0f - (x - y) * (x + y);
__imag__ ZZ = -2.0f * x * y;
ZZ = csqrtf (ZZ);
/* add I * Z to ZZ */
__real__ ZZ -= y;
__imag__ ZZ += x;
ZZ = clogf (ZZ);
/* mult by -I */
__real__ Res = __imag__ ZZ;
__imag__ Res = - __real__ ZZ;
}
return (Res);
}