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-rw-r--r--nuttx/include/nuttx/math.h262
1 files changed, 260 insertions, 2 deletions
diff --git a/nuttx/include/nuttx/math.h b/nuttx/include/nuttx/math.h
index 84dbea6e0..160926d07 100644
--- a/nuttx/include/nuttx/math.h
+++ b/nuttx/include/nuttx/math.h
@@ -50,14 +50,272 @@
#ifdef CONFIG_ARCH_MATH_H
# include <arch/math.h>
-#endif
+
+/* If CONFIG_LIB is enabled, then the math library at lib/math will be
+ * built. This library was taken from the math library developed for the
+ * Rhombus OS by Nick Johnson (https://github.com/nickbjohnson4224/rhombus).
+ * The port or the Rhombus math library was contributed by Darcy Gong.
+ */
+
+#else if defined CONFIG_LIBM
/****************************************************************************
- * Type Definitions
+ * 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>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* General Constants ********************************************************/
+
+#define INFINITY (1.0/0.0)
+#define NAN (0.0/0.0)
+#define HUGE_VAL INFINITY
+
+#define isnan(x) ((x) != (x))
+#define isinf(x) (((x) == INFINITY) || ((x) == -INFINITY))
+
+/* Exponential and Logarithmic constants ************************************/
+
+#define M_E 2.7182818284590452353602874713526625
+#define M_SQRT2 1.4142135623730950488016887242096981
+#define M_SQRT1_2 0.7071067811865475244008443621048490
+#define M_LOG2E 1.4426950408889634073599246810018921
+#define M_LOG10E 0.4342944819032518276511289189166051
+#define M_LN2 0.6931471805599453094172321214581765
+#define M_LN10 2.3025850929940456840179914546843642
+
+/* Trigonometric Constants **************************************************/
+
+#define M_PI 3.1415926535897932384626433832795029
+#define M_PI_2 1.5707963267948966192313216916397514
+#define M_PI_4 0.7853981633974483096156608458198757
+#define M_1_PI 0.3183098861837906715377675267450287
+#define M_2_PI 0.6366197723675813430755350534900574
+#define M_2_SQRTPI 1.1283791670955125738961589031215452
+
+/****************************************************************************
* Public Function Prototypes
****************************************************************************/
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/* General Functions ********************************************************/
+
+float ceilf (float x);
+#if CONFIG_HAVE_DOUBLE
+double ceil (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double ceill (long double x);
+#endif
+
+float floorf(float x);
+#if CONFIG_HAVE_DOUBLE
+double floor (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double floorl(long double x);
+#endif
+
+float fabsf (float x);
+#if CONFIG_HAVE_DOUBLE
+double fabs (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double fabsl (long double x);
+#endif
+
+float modff (float x, float *iptr);
+#if CONFIG_HAVE_DOUBLE
+double modf (double x, double *iptr);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double modfl (long double x, long double *iptr);
+#endif
+
+float fmodf (float x, float div);
+#if CONFIG_HAVE_DOUBLE
+double fmod (double x, double div);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double fmodl (long double x, long double div);
+#endif
+
+/* Exponential and Logarithmic Functions ************************************/
+
+float powf (float b, float e);
+#if CONFIG_HAVE_DOUBLE
+double pow (double b, double e);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double powl (long double b, long double e);
+#endif
+
+float expf (float x);
+#if CONFIG_HAVE_DOUBLE
+double exp (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double expl (long double x);
+#endif
+
+float logf (float x);
+#if CONFIG_HAVE_DOUBLE
+double log (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double logl (long double x);
+#endif
+
+float log10f(float x);
+#if CONFIG_HAVE_DOUBLE
+double log10 (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double log10l(long double x);
+#endif
+
+float log2f (float x);
+#if CONFIG_HAVE_DOUBLE
+double log2 (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double log2l (long double x);
+#endif
+
+float sqrtf (float x);
+#if CONFIG_HAVE_DOUBLE
+double sqrt (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double sqrtl (long double x);
+#endif
+
+float ldexpf(float x, int n);
+#if CONFIG_HAVE_DOUBLE
+double ldexp (double x, int n);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double ldexpl(long double x, int n);
+#endif
+
+float frexpf(float x, int *exp);
+#if CONFIG_HAVE_DOUBLE
+double frexp (double x, int *exp);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double frexpl(long double x, int *exp);
+#endif
+
+/* Trigonometric Functions **************************************************/
+
+float sinf (float x);
+#if CONFIG_HAVE_DOUBLE
+double sin (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double sinl (long double x);
+#endif
+
+float cosf (float x);
+#if CONFIG_HAVE_DOUBLE
+double cos (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double cosl (long double x);
+#endif
+
+float tanf (float x);
+#if CONFIG_HAVE_DOUBLE
+double tan (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double tanl (long double x);
+#endif
+
+float asinf (float x);
+#if CONFIG_HAVE_DOUBLE
+double asin (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double asinl (long double x);
+#endif
+
+float acosf (float x);
+#if CONFIG_HAVE_DOUBLE
+double acos (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double acosl (long double x);
+#endif
+
+float atanf (float x);
+#if CONFIG_HAVE_DOUBLE
+double atan (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double atanl (long double x);
+#endif
+
+float atan2f(float y, float x);
+#if CONFIG_HAVE_DOUBLE
+double atan2 (double y, double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double atan2l(long double y, long double x);
+#endif
+
+float sinhf (float x);
+#if CONFIG_HAVE_DOUBLE
+double sinh (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double sinhl (long double x);
+#endif
+
+float coshf (float x);
+#if CONFIG_HAVE_DOUBLE
+double cosh (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double coshl (long double x);
+#endif
+
+float tanhf (float x);
+#if CONFIG_HAVE_DOUBLE
+double tanh (double x);
+#endif
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+long double tanhl (long double x);
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* CONFIG_LIBM */
#endif /* __INCLUDE_NUTTX_MATH_H */
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