source: azure_iot_hub/trunk/musl-1.1.18/src/complex/cacos.c@ 388

Last change on this file since 388 was 388, checked in by coas-nagasima, 5 years ago

Azure IoT Hub Device C SDK を使ったサンプルの追加
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-csrc
File size: 266 bytes
Line 
1#include "libm.h"
2
3// FIXME: Hull et al. "Implementing the complex arcsine and arccosine functions using exception handling" 1997
4
5/* acos(z) = pi/2 - asin(z) */
6
7double complex cacos(double complex z)
8{
9 z = casin(z);
10 return CMPLX(M_PI_2 - creal(z), -cimag(z));
11}
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