-/*-------------------------------------------------------------------------
- math.h - ANSI functions forward declarations
-
- Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- This program 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- In other words, you are welcome to use, share and improve this program.
- You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
--------------------------------------------------------------------------*/
-
-#ifndef __SDC51_MATH_H
-#define __SDC51_MATH_H 1
-#error Floating point not yet completely implemented
+/* math.h: Floating point math function declarations
+
+ 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 */
+
+/* Version 1.0 - Initial release */
+
+#ifndef _INC_MATH
+#define _INC_MATH
+
+#define HUGE_VALF 3.402823466e+38
+
+#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
+
+union float_long
+{
+ float f;
+ long l;
+};
+
+#if defined(SDCC_MATH_LIB) && defined(SDCC_mcs51) && !defined(SDCC_USE_XSTACK) && !defined(SDCC_STACK_AUTO) && !defined(_SDCC_NO_ASM_LIB_FUNCS)
+/* Compile the mcs51 assembly version only when all these
+ conditions are met. Since not all the functions are
+ reentrant, do not compile with --stack-auto is used. */
+#define MATH_ASM_MCS51
#endif
+/* Functions on the z80 & gbz80 are always reentrant and so the "reentrant" */
+/* keyword is not defined. */
+#if defined(SDCC_z80) || defined(SDCC_gbz80)
+#define _FLOAT_FUNC_REENTRANT
+#else
+#define _FLOAT_FUNC_REENTRANT __reentrant
+#endif
+
+/**********************************************
+ * Prototypes for float ANSI C math functions *
+ **********************************************/
+
+/* Trigonometric functions */
+float sinf(const float x) _FLOAT_FUNC_REENTRANT;
+float cosf(const float x) _FLOAT_FUNC_REENTRANT;
+float tanf(const float x) _FLOAT_FUNC_REENTRANT;
+float cotf(const float x) _FLOAT_FUNC_REENTRANT;
+float asinf(const float x) _FLOAT_FUNC_REENTRANT;
+float acosf(const float x) _FLOAT_FUNC_REENTRANT;
+float atanf(const float x) _FLOAT_FUNC_REENTRANT;
+float atan2f(const float x, const float y);
+
+/* Hyperbolic functions */
+float sinhf(const float x) _FLOAT_FUNC_REENTRANT;
+float coshf(const float x) _FLOAT_FUNC_REENTRANT;
+float tanhf(const float x) _FLOAT_FUNC_REENTRANT;
+/* Exponential, logarithmic and power functions */
+float expf(const float x);
+float logf(const float x) _FLOAT_FUNC_REENTRANT;
+float log10f(const float x) _FLOAT_FUNC_REENTRANT;
+float powf(const float x, const float y);
+float sqrtf(const float a) _FLOAT_FUNC_REENTRANT;
+/* Nearest integer, absolute value, and remainder functions */
+float fabsf(const float x) _FLOAT_FUNC_REENTRANT;
+float frexpf(const float x, int *pw2);
+float ldexpf(const float x, const int pw2);
+float ceilf(float x) _FLOAT_FUNC_REENTRANT;
+float floorf(float x) _FLOAT_FUNC_REENTRANT;
+float modff(float x, float * y);
+#endif /* _INC_MATH */
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