mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Copyright (C) 2011-2025 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/*
|
|
* wrapper atan2f(y,x)
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
#include <math_private.h>
|
|
#include <math-svid-compat.h>
|
|
#include <libm-alias-float.h>
|
|
|
|
|
|
#if LIBM_SVID_COMPAT
|
|
float
|
|
__atan2f (float y, float x)
|
|
{
|
|
float z;
|
|
|
|
if (__builtin_expect (x == 0.0f && y == 0.0f, 0) && _LIB_VERSION == _SVID_)
|
|
return __kernel_standard_f (y, x, 103); /* atan2(+-0,+-0) */
|
|
|
|
z = __ieee754_atan2f (y, x);
|
|
if (__glibc_unlikely (z == 0.0f && y != 0.0f && isfinite (x)))
|
|
__set_errno (ERANGE);
|
|
return z;
|
|
}
|
|
libm_alias_float (__atan2, atan2)
|
|
#endif
|