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Diffstat (limited to 'nuttx/lib/math/lib_asinf.c')
-rw-r--r-- | nuttx/lib/math/lib_asinf.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/nuttx/lib/math/lib_asinf.c b/nuttx/lib/math/lib_asinf.c deleted file mode 100644 index 17669a934..000000000 --- a/nuttx/lib/math/lib_asinf.c +++ /dev/null @@ -1,65 +0,0 @@ -/************************************************************************ - * lib/math/lib_sinf.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 <math.h> -#include <float.h> - -/************************************************************************ - * Public Functions - ************************************************************************/ - -float asinf(float x) -{ - long double y, y_sin, y_cos; - - y = 0; - - while (1) - { - y_sin = sinf(y); - y_cos = cosf(y); - - if (y > M_PI_2 || y < -M_PI_2) - { - y = fmodf(y, M_PI); - } - - if (y_sin + FLT_EPSILON >= x && y_sin - FLT_EPSILON <= x) - { - break; - } - - y = y - (y_sin - x) / y_cos; - } - - return y; -} - |