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#if 0
# define TGSOURCE "complex/casinh.c"
#include "_tgmath.h"
#include <complex.h>
#include <math.h>
#include <fenv.h>
TYPE complex TGFN(casinh)(TYPE complex z)
{
int classr = fpclassify(TGFN(creal)(z));
int classi = fpclassify(TGFN(cimag)(z));
int signr = signbit(TGFN(creal)(z));
int signi = signbit(TGFN(cimag)(z));
if (classr == FP_ZERO && classi == FP_ZERO) {
return TGCMPLX(0.0, 0.0);
}
if (classr != FP_INFINITE && !signr && classi == FP_INFINITE) {
return TGCMPLX(INFINITY, NAN);
}
if (classr != FP_INFINITE && classi == FP_NAN) {
return TGCMPLX(NAN, NAN);
}
if (classr == FP_INFINITE && classi != FP_INFINITE && !signi) {
return TGCMPLX(INFINITY, 0.0);
}
if (classr == FP_INFINITE && classi == FP_INFINITE) {
return TGCMPLX(INFINITY, M_PI_4);
}
if (classr == FP_INFINITE && classi == FP_NAN) {
return TGCMPLX(INFINITY, NAN);
}
if (classr == FP_NAN && classi == FP_ZERO) {
return TGCMPLX(NAN, 0.0);
}
if (classr == FP_NAN && classi != FP_INFINITE && classi != FP_ZERO) {
feraiseexcept(FE_INVALID);
return TGCMPLX(NAN, NAN);
}
if (classr == FP_NAN && classi == FP_INFINITE) {
return TGCMPLX(INFINITY, NAN);
}
if (classr == FP_NAN && classi == FP_NAN) {
return TGCMPLX(NAN, NAN);
}
return z;
}
/*d
The casinh functions compute the complex arc hyperbolic sine of z, with branch cuts
outside the interval [−i, +i] along the imaginary axis.
d*/
/*r
The casinh functions return the complex arc hyperbolic sine value, in the range of a
strip mathematically unbounded along the real axis and in the interval [−i π /2, +i π /2]
along the imaginary axis.
r*/
/*
STDC(199901)
LINK(m)
*/
#endif
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