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/* catanhl.c */
/*
Contributed by Danny Smith
2005-01-04
*/
#include <math.h>
#include <complex.h>
/* catanh (z) = -I * catan (I * z) */
long double complex catanhl (long double complex Z)
{
long double complex Tmp;
long double complex Res;
__real__ Tmp = - __imag__ Z;
__imag__ Tmp = __real__ Z;
Tmp = catanl (Tmp);
__real__ Res = __imag__ Tmp;
__imag__ Res = - __real__ Tmp;
return Res;
}
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