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glibc  2.9
s_cacos.c File Reference
#include <complex.h>
#include <math.h>
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__complex__ double __cacos (__complex__ double x)

Function Documentation

__complex__ double __cacos ( __complex__ double  x)

Definition at line 25 of file s_cacos.c.

  __complex__ double y;
  __complex__ double res;

  y = __casin (x);

  __real__ res = (double) M_PI_2 - __real__ y;
  __imag__ res = -__imag__ y;

  return res;

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