/usr/share/sdcc/include/math.h is in sdcc-libraries 2.9.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | /* 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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