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Math library: Adds support for the expm1 functions: http://pubs.opengroup.org/onlinepubs/009695399/functions/expm1.html. From Brennan Ashton

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Gregory Nutt
2015-01-23 17:15:42 -06:00
parent cc4c5bc927
commit dc759d31d9
1 changed files with 4 additions and 1 deletions
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include/nuttx/math.h
+4 -1
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@@ -1,7 +1,7 @@
/**************************************************************************** /****************************************************************************
* include/nuttx/math.h * include/nuttx/math.h
* *
* Copyright (C) 2009, 2012, 2014 Gregory Nutt. All rights reserved. * Copyright (C) 2009, 2012, 2014-2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org> * Author: Gregory Nutt <gnutt@nuttx.org>
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@@ -193,11 +193,14 @@ long double powl (long double b, long double e);
#endif #endif
float expf (float x); float expf (float x);
#define expm1f(x) (expf(x) - 1.0)
#if CONFIG_HAVE_DOUBLE #if CONFIG_HAVE_DOUBLE
double exp (double x); double exp (double x);
#define expm1(x) (exp(x) - 1.0)
#endif #endif
#ifdef CONFIG_HAVE_LONG_DOUBLE #ifdef CONFIG_HAVE_LONG_DOUBLE
long double expl (long double x); long double expl (long double x);
#define expm1l(x) (expl(x) - 1.0)
#endif #endif
float logf (float x); float logf (float x);