lib/libm/src/s_carg.c

   1 /*      $OpenBSD: s_carg.c,v 1.5 2013/03/28 18:09:38 martynas Exp $     */
   2 /*
   3  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <complex.h>
  19 #include <float.h>
  20 #include <math.h>
  21
  22 double
  23 carg(double complex z)
  24 {
  25         return atan2 (__imag__ z, __real__ z);
  26 }
  27
  28 #if     LDBL_MANT_DIG == 53
  29 __strong_alias(cargl, carg);
  30 #endif  /* LDBL_MANT_DIG == 53 */