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