#ifndef _GSL_MATH_H_
#include <math.h>
#include <limits.h>
#include <float.h>

#ifndef M_PI
#define M_PI		3.14159265358979323846
#endif

#ifndef M_PI_4
#define M_PI_4        	0.78539816339744830962      /* pi/4 */
#endif

#ifndef M_LN10
#define       	      	2.30258509299404568402	    /* ln(10) */
#endif

#ifndef M_LN2
#define       	      	0.69314718055994530942	    /* ln(2) */
#endif

/* need to determine this stuff at configure time, just use placeholder
   values for now */

#define GSL_MACH_EPS		1.e-14
#define GSL_SQRT_MACH_EPS	1.e-7

#define GSL_LOG_DBL_MIN       	(DBL_MIN_10_EXP * M_LN10)
#define GSL_LOG_DBL_MAX       	(DBL_MAX_10_EXP * M_LN10)


#endif /* !_GSL_MATH_H_ */