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math.h
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#ifndef _MATH_H_
#define _MATH_H_
#include <__unsupported.h>
#ifdef _PIC12
#define __exp_support __unsupported(exp)
#define __sin_support __unsupported(sin)
#define __cos_support __unsupported(cos)
#define __tan_support __unsupported(tan)
#define __asin_support __unsupported(asin)
#define __acos_support __unsupported(acos)
#define __atan2_support __unsupported(atan2)
#define __pow_support __unsupported(pow)
#define __cosh_support __unsupported(cosh)
#define __sinh_support __unsupported(sinh)
#else
#define __exp_support
#define __sin_support
#define __cos_support
#define __tan_support
#define __asin_support
#define __acos_support
#define __atan2_support
#define __pow_support
#define __cosh_support
#define __sinh_support
#endif
extern double fabs(double);
extern double floor(double);
extern double ceil(double);
extern double modf(double, double *);
extern double sqrt(double);
extern double atof(const char *);
extern double sin(double) __sin_support;
extern double cos(double) __cos_support;
extern double tan(double) __tan_support;
extern double asin(double) __asin_support;
extern double acos(double) __acos_support;
extern double atan(double);
extern double atan2(double, double) __atan2_support;
extern double log(double);
extern double log10(double);
extern double pow(double, double) __pow_support;
extern double exp(double) __exp_support;
extern double sinh(double) __sinh_support;
extern double cosh(double) __cosh_support;
extern double tanh(double);
extern double eval_poly(double, const double *, int);
extern double frexp(double, int *);
extern double ldexp(double, int);
extern double fmod(double, double);
extern double trunc(double);
extern double round(double);
// Microchip equivalent definitions
#define M_E 2.7182818284590452354
#define M_LOG2E 1.4426950408889634074
#define M_LOG10E 0.43429448190325182765
#define M_LN2 0.69314718055994530942
#define M_LN10 2.30258509299404568402
#define M_PI 3.14159265358979323846
#define M_PI_2 1.57079632679489661923
#define M_PI_4 0.78539816339744830962
#define M_1_PI 0.31830988618379067154
#define M_2_PI 0.63661977236758134308
#define M_2_SQRTPI 1.12837916709551257390
#define M_SQRT2 1.41421356237309504880
#define M_SQRT1_2 0.70710678118654752440
#ifdef __18CXX
unsigned long ieeetomchp(double v);
double mchptoieee(unsigned long v);
#endif
#endif /* _MATH_H_ */