50 lines
909 B
C
50 lines
909 B
C
/**********
|
|
Copyright 1999 Emmanuel Rouat
|
|
**********/
|
|
|
|
/* Decl. for missing maths functions, if any */
|
|
|
|
#ifndef MISSING_MATH_H_INCLUDED
|
|
#define MISSING_MATH_H_INCLUDED
|
|
|
|
bool AlmostEqualUlps(double, double, int);
|
|
|
|
#ifndef HAVE_ERFC
|
|
extern double erfc(double);
|
|
#endif
|
|
|
|
#ifndef HAVE_LOGB
|
|
extern double logb(double);
|
|
#endif
|
|
|
|
#ifndef HAVE_SCALB
|
|
extern double scalb(double, double);
|
|
#endif
|
|
|
|
#ifndef HAVE_SCALBN
|
|
extern double scalbn(double, int);
|
|
#endif
|
|
|
|
#if !HAVE_DECL_ISNAN
|
|
#ifndef HAVE_ISNAN
|
|
extern int isnan(double);
|
|
#endif
|
|
#endif
|
|
|
|
#if !HAVE_DECL_ISINF
|
|
#ifndef HAVE_ISINF
|
|
#if defined(HAVE_FINITE) && (HAVE_DECL_ISNAN || defined (HAVE_ISNAN))
|
|
#define isinf(x) (!finite(x) && !isnan(x))
|
|
#define HAVE_ISINF
|
|
#else
|
|
#ifdef HAVE_IEEEFP_H
|
|
extern int isinf(double);
|
|
#endif
|
|
#endif
|
|
#else /* HAVE_ISINF */
|
|
extern int isinf(double);
|
|
#endif /* HAVE_ISINF */
|
|
#endif /* HAVE_DECL_ISINF */
|
|
|
|
#endif /* MISSING_MATH_H_INCLUDED */
|