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author | Simon Wilks <sjwilks@gmail.com> | 2013-01-24 23:27:27 +0100 |
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committer | Simon Wilks <sjwilks@gmail.com> | 2013-01-24 23:27:27 +0100 |
commit | 0669d2aee01126a989986c267dcd5a6489edfff8 (patch) | |
tree | 7e9c8c7073f39f4de7897d525b20dbeeb6cb755d /nuttx/libc/math/lib_sinhf.c | |
parent | 9924c4f425bc9fc507e7d065cc373a6cd9bbfebd (diff) | |
parent | beb45222985f1eb9fbe21b22b95c30ab8ca5bbac (diff) | |
download | px4-firmware-0669d2aee01126a989986c267dcd5a6489edfff8.tar.gz px4-firmware-0669d2aee01126a989986c267dcd5a6489edfff8.tar.bz2 px4-firmware-0669d2aee01126a989986c267dcd5a6489edfff8.zip |
Merge remote-tracking branch 'upstream/master' into hott
Diffstat (limited to 'nuttx/libc/math/lib_sinhf.c')
-rw-r--r-- | nuttx/libc/math/lib_sinhf.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/nuttx/libc/math/lib_sinhf.c b/nuttx/libc/math/lib_sinhf.c new file mode 100644 index 000000000..e9d198440 --- /dev/null +++ b/nuttx/libc/math/lib_sinhf.c @@ -0,0 +1,42 @@ +/************************************************************************ + * libc/math/lib_sinhf.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, 2010 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> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float sinhf(float x) +{ + x = expf(x); + return ((x - (1.0 / x)) / 2.0); +} |