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#ifndef _MATH_H
#define _MATH_H
#include <sys/cdefs.h>
#define M_E 2.7182818284590452354 /* e */
#define M_LOG2E 1.4426950408889634074 /* log_2 e */
#define M_LOG10E 0.43429448190325182765 /* log_10 e */
#define M_LN2 0.69314718055994530942 /* log_e 2 */
#define M_LN10 2.30258509299404568402 /* log_e 10 */
#define M_PI 3.14159265358979323846 /* pi */
#define M_PI_2 1.57079632679489661923 /* pi/2 */
#define M_PI_4 0.78539816339744830962 /* pi/4 */
#define M_1_PI 0.31830988618379067154 /* 1/pi */
#define M_2_PI 0.63661977236758134308 /* 2/pi */
#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
#define M_El 2.7182818284590452353602874713526625L /* e */
#define M_LOG2El 1.4426950408889634073599246810018922L /* log_2 e */
#define M_LOG10El 0.4342944819032518276511289189166051L /* log_10 e */
#define M_LN2l 0.6931471805599453094172321214581766L /* log_e 2 */
#define M_LN10l 2.3025850929940456840179914546843642L /* log_e 10 */
#define M_PIl 3.1415926535897932384626433832795029L /* pi */
#define M_PI_2l 1.5707963267948966192313216916397514L /* pi/2 */
#define M_PI_4l 0.7853981633974483096156608458198757L /* pi/4 */
#define M_1_PIl 0.3183098861837906715377675267450287L /* 1/pi */
#define M_2_PIl 0.6366197723675813430755350534900574L /* 2/pi */
#define M_2_SQRTPIl 1.1283791670955125738961589031215452L /* 2/sqrt(pi) */
#define M_SQRT2l 1.4142135623730950488016887242096981L /* sqrt(2) */
#define M_SQRT1_2l 0.7071067811865475244008443621048490L /* 1/sqrt(2) */
double sin(double d) __THROW __attribute__((__const__));
double cos(double d) __THROW __attribute__((__const__));
double tan(double d) __THROW __attribute__((__const__));
double sinh(double d) __THROW __attribute__((__const__));
double cosh(double d) __THROW __attribute__((__const__));
double tanh(double d) __THROW __attribute__((__const__));
double asin(double d) __THROW __attribute__((__const__));
double acos(double d) __THROW __attribute__((__const__));
double atan(double d) __THROW __attribute__((__const__));
double asinh(double d) __THROW __attribute__((__const__));
double acosh(double d) __THROW __attribute__((__const__));
double atanh(double d) __THROW __attribute__((__const__));
double exp(double d) __THROW __attribute__((__const__));
double exp10(double d) __THROW __attribute__((__const__));
double log(double d) __THROW __attribute__((__const__));
double log10(double d) __THROW __attribute__((__const__));
double pow(double x, double y) __THROW __attribute__((__const__));
double sqrt(double x) __THROW __attribute__((__const__));
double fabs(double x) __THROW __attribute__((__const__));
double fmod(double x, double y) __THROW __attribute__((__const__));
double floor(double x) __attribute__((__const__));
double ceil(double x) __attribute__((__const__));
double expm1(double x) __THROW __attribute__((__const__));
double hypot(double x, double y) __THROW __attribute__((__const__));
double atan2(double x, double y) __THROW __attribute__((__const__));
double copysign(double value, double sign) __attribute__((__const__));
# define HUGE_VAL \
(__extension__ \
((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
{ __l: 0x000000007ff00000ULL }).__d)
#ifdef _GNU_SOURCE
void sincos(double x, double* sinx, double* cosx);
double ipow (double mant, int expo);
#endif
int isnan(double d) __attribute__((__const__));
int isinf(double d) __attribute__((__const__));
int finite(double d) __attribute__((__const__));
double j0(double x);
double j1(double x);
double jn(int n, double x);
double y0(double x);
double y1(double x);
double yn(int n, double x);
double erf(double x);
double erfc(double x);
double lgamma(double x);
double rint(double x);
#endif
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