/* math.h: Floating point math function declarations
- Copyright (C) 2001 Jesus Calvino-Fraga, jesusc@ieee.org
+ 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
#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 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.
+/* 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
{
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 cosf(const float x);
-float tanf(const float x);
-float cotf(const float x);
-float asinf(const float x);
-float acosf(const float x);
-float atanf(const float x);
+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 coshf(const float x);
-float tanhf(const float x);
+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 log10f(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 sqrtf(const float a) _FLOAT_FUNC_REENTRANT;
/* Nearest integer, absolute value, and remainder functions */
-float fabsf(const float x);
+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 floorf(float x);
+float ceilf(float x) _FLOAT_FUNC_REENTRANT;
+float floorf(float x) _FLOAT_FUNC_REENTRANT;
float modff(float x, float * y);
#endif /* _INC_MATH */