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catanhf.c

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the w64 mingw-runtime package.
 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 */
/* catanhf.c */
/*
   Contributed by Danny Smith
   2004-12-24
*/

#include <math.h>
#include <complex.h>

/*  catanh (z) = -I * catan (I  * z)  */

float complex catanhf (float complex Z)
{
  float complex Tmp;
  float complex Res;

  __real__ Tmp = - __imag__ Z;
  __imag__ Tmp =   __real__ Z;
  Tmp = catanf (Tmp);
  __real__ Res =  __imag__ Tmp;
  __imag__ Res = - __real__ Tmp;
  return Res;
}

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