diff options
Diffstat (limited to 'nuttx/libc/math/lib_atan2.c')
-rw-r--r-- | nuttx/libc/math/lib_atan2.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/nuttx/libc/math/lib_atan2.c b/nuttx/libc/math/lib_atan2.c deleted file mode 100644 index 6d7d2ad48..000000000 --- a/nuttx/libc/math/lib_atan2.c +++ /dev/null @@ -1,86 +0,0 @@ -/************************************************************************ - * libc/math/lib_atan2.c - * - * This file is a part of NuttX: - * - * Copyright (C) 2012 Gregory Nutt. All rights reserved. - * Ported by: Darcy Gong - * - * It derives from the Rhombs OS math library by Nick Johnson which has - * a compatibile, MIT-style license: - * - * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - * - ************************************************************************/ - -/************************************************************************ - * Included Files - ************************************************************************/ - -#include <nuttx/config.h> -#include <nuttx/compiler.h> - -#include <math.h> - -/************************************************************************ - * Public Functions - ************************************************************************/ - -#ifdef CONFIG_HAVE_DOUBLE -double atan2(double y, double x) -{ - if (y == 0.0) - { - if (x >= 0.0) - { - return 0.0; - } - else - { - return M_PI; - } - } - else if (y > 0.0) - { - if (x == 0.0) - { - return M_PI_2; - } - else if (x > 0.0) - { - return atan(y / x); - } - else - { - return M_PI - atan(y / x); - } - } - else - { - if (x == 0.0) - { - return M_PI + M_PI_2; - } - else if (x > 0.0) - { - return 2 * M_PI - atan(y / x); - } - else - { - return M_PI + atan(y / x); - } - } -} -#endif |