* device/lib/pic/libm: NEW, added math library functions

[fw/sdcc] / device / include / pic / math.h

diff --git a/device/include/pic/math.h b/device/include/pic/math.h
new file mode 100644 (file)
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--- /dev/null
+++ b/device/include/pic/math.h
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+/*-------------------------------------------------------------------------
+   math.h: Floating point math function declarations
+
+    Ported to PIC16 port by Vangelis Rokas, 2004 (vrokas@otenet.gr)
+    Adopted for the PIC14 port 2006 by Raphael Neider <rneider AT web.de>
+    
+    Copyright (C) 2001  Jesus Calvino-Fraga, jesusc@ieee.org 
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+-------------------------------------------------------------------------*/
+
+/*
+** $Id: math.h 3648 2005-01-22 18:02:16Z vrokas $
+*/
+
+
+#ifndef __PIC14_MATH_H
+#define __PIC14_MATH_H 1
+
+#include <sdcc-lib.h>
+
+#define PI          3.1415926536
+#define TWO_PI      6.2831853071
+#define HALF_PI     1.5707963268
+#define QUART_PI    0.7853981634
+#define iPI         0.3183098862
+#define iTWO_PI     0.1591549431
+#define TWO_O_PI    0.6366197724
+
+// EPS=B**(-t/2), where B is the radix of the floating-point representation
+// and there are t base-B digits in the significand.  Therefore, for floats
+// EPS=2**(-12).  Also define EPS2=EPS*EPS.
+#define EPS 244.14062E-6
+#define EPS2 59.6046E-9
+#define XMAX 3.402823466E+38
+
+union float_long
+{
+    float f;
+    long l;
+};
+
+/**********************************************
+ * Prototypes for float ANSI C math functions *
+ **********************************************/
+
+/* Trigonometric functions */
+float sinf(const float x) _MATH_REENTRANT;
+float cosf(const float x) _MATH_REENTRANT;
+float tanf(const float x) _MATH_REENTRANT;
+float cotf(const float x) _MATH_REENTRANT;
+float asinf(const float x) _MATH_REENTRANT;
+float acosf(const float x) _MATH_REENTRANT;
+float atanf(const float x) _MATH_REENTRANT;
+float atan2f(const float x, const float y);
+
+/* Hyperbolic functions */
+float sinhf(const float x) _MATH_REENTRANT;
+float coshf(const float x) _MATH_REENTRANT;
+float tanhf(const float x) _MATH_REENTRANT;
+
+/* Exponential, logarithmic and power functions */
+float expf(const float x);
+float logf(const float x) _MATH_REENTRANT;
+float log10f(const float x) _MATH_REENTRANT;
+float powf(const float x, const float y);
+float sqrtf(const float a) _MATH_REENTRANT;
+
+/* Nearest integer, absolute value, and remainder functions */
+float fabsf(const float x) _MATH_REENTRANT;
+float frexpf(const float x, int *pw2);
+float ldexpf(const float x, const int pw2);
+float ceilf(float x) _MATH_REENTRANT;
+float floorf(float x) _MATH_REENTRANT;
+float modff(float x, float * y);
+
+#endif  /* __PIC14_MATH_H */