106 lines
3.6 KiB
C
Executable File
106 lines
3.6 KiB
C
Executable File
/* math.h: Floating point math function declarations
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Copyright (C) 2001 Jesus Calvino-Fraga, jesusc@ieee.org
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* Version 1.0 - Initial release */
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#ifndef _INC_MATH
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#define _INC_MATH
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#define PI 3.1415926536
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#define TWO_PI 6.2831853071
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#define HALF_PI 1.5707963268
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#define QUART_PI 0.7853981634
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#define iPI 0.3183098862
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#define iTWO_PI 0.1591549431
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#define TWO_O_PI 0.6366197724
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#ifndef RAND_MAX
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#define RAND_MAX 0x7FFF
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#endif
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// EPS=B**(-t/2), where B is the radix of the floating-point representation
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// and there are t base-B digits in the significand. Therefore, for floats
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// EPS=2**(-12). Also define EPS2=EPS*EPS.
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#define EPS 244.14062E-6
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#define EPS2 59.6046E-9
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#define XMAX 3.402823466E+38
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union float_long
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{
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float f;
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long l;
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};
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#define _FLOAT_FUNC_REENTRANT
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// rh // #if defined(SDCC_MATH_LIB) && defined(SDCC_mcs51) && !defined(SDCC_USE_XSTACK) && !defined(SDCC_STACK_AUTO) && !defined(_SDCC_NO_ASM_LIB_FUNCS)
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// rh // // Compile the mcs51 assembly version only when all these
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// rh // // conditions are met. Since not all the functions are
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// rh // // reentrant, do not compile with --stack-auto is used.
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// rh // #define MATH_ASM_MCS51
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// rh // #endif
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// rh //
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// rh //
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// rh // /* Functions on the z80 & gbz80 are always reentrant and so the "reentrant" */
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// rh // /* keyword is not defined. */
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// rh // #if defined(SDCC_z80) || defined(SDCC_gbz80)
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// rh // #define _FLOAT_FUNC_REENTRANT
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// rh // #else
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// rh // #define _FLOAT_FUNC_REENTRANT __reentrant
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// rh // #endif
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/**********************************************
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* Prototypes for float ANSI C math functions *
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**********************************************/
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/* Trigonometric functions */
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float sinf(const float x) _FLOAT_FUNC_REENTRANT;
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float cosf(const float x) _FLOAT_FUNC_REENTRANT;
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float tanf(const float x) _FLOAT_FUNC_REENTRANT;
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float cotf(const float x) _FLOAT_FUNC_REENTRANT;
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float asinf(const float x) _FLOAT_FUNC_REENTRANT;
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float acosf(const float x) _FLOAT_FUNC_REENTRANT;
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float atanf(const float x) _FLOAT_FUNC_REENTRANT;
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float atan2f(const float x, const float y);
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/* Hyperbolic functions */
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float sinhf(const float x) _FLOAT_FUNC_REENTRANT;
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float coshf(const float x) _FLOAT_FUNC_REENTRANT;
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float tanhf(const float x) _FLOAT_FUNC_REENTRANT;
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/* Exponential, logarithmic and power functions */
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float expf(const float x);
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float logf(const float x) _FLOAT_FUNC_REENTRANT;
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float log10f(const float x) _FLOAT_FUNC_REENTRANT;
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float powf(const float x, const float y);
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float sqrtf(const float a) _FLOAT_FUNC_REENTRANT;
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/* Nearest integer, absolute value, and remainder functions */
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float fabsf(const float x) _FLOAT_FUNC_REENTRANT;
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float frexpf(const float x, int *pw2);
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float ldexpf(const float x, const int pw2);
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float ceilf(float x) _FLOAT_FUNC_REENTRANT;
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float floorf(float x) _FLOAT_FUNC_REENTRANT;
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float modff(float x, float * y);
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long random( void );
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long powlong(long, long);
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#endif /* _INC_MATH */
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