diff options
Diffstat (limited to 'math/math.h')
| -rw-r--r-- | math/math.h | 63 |
1 files changed, 40 insertions, 23 deletions
diff --git a/math/math.h b/math/math.h index d98c221e45..713b3d5416 100644 --- a/math/math.h +++ b/math/math.h @@ -194,29 +194,6 @@ extern long long int llrint __P ((long double __x)); extern long int lround __P ((long double __x)); extern long long int llround __P ((long double __x)); - -/* Comparison macros. */ - -/* Return nonzero value if X is greater than Y. */ -# define isgreater(x, y) (!isunordered ((x), (y)) && (x) > (y)) - -/* Return nonzero value if X is greater than or equal to Y. */ -# define isgreaterequal(x, y) (!isunordered ((x), (y)) && (x) >= (y)) - -/* Return nonzero value if X is less than Y. */ -# define isless(x, y) (!isunordered ((x), (y)) && (x) < (y)) - -/* Return nonzero value if X is less than or equal to Y. */ -# define islessequal(x, y) (!isunordered ((x), (y)) && (x) <= (y)) - -/* Return nonzero value if either X is less than Y or Y is less than X. */ -# define islessgreater(x, y) \ - (!isunordered ((x), (y)) && ((x) < (y) || (y) < (x))) - -/* Return nonzero value if arguments are unordered. */ -# define isunordered(x, y) \ - (fpclassify (x) == FP_NAN || fpclassify (y) == FP_NAN) - #endif /* Use ISO C 9X. */ #ifdef __USE_MISC @@ -327,6 +304,46 @@ extern int matherr __P ((struct exception *__exc)); #endif +#if __USE_ISOC9X +/* ISO C 9X defines some macros to compare number while taking care + for unordered numbers. Since many FPUs provide special + instructions to support these and these tests are defined in + <bits/mathinline.h>, we define the macros at this late point. */ + +/* Return nonzero value if X is greater than Y. */ +# ifndef isgreater +# define isgreater(x, y) (!isunordered ((x), (y)) && (x) > (y)) +# endif + +/* Return nonzero value if X is greater than or equal to Y. */ +# ifndef isgreaterequal +# define isgreaterequal(x, y) (!isunordered ((x), (y)) && (x) >= (y)) +# endif + +/* Return nonzero value if X is less than Y. */ +# ifndef isless +# define isless(x, y) (!isunordered ((x), (y)) && (x) < (y)) +# endif + +/* Return nonzero value if X is less than or equal to Y. */ +# ifndef islessequal +# define islessequal(x, y) (!isunordered ((x), (y)) && (x) <= (y)) +# endif + +/* Return nonzero value if either X is less than Y or Y is less than X. */ +# ifndef islessgreater +# define islessgreater(x, y) \ + (!isunordered ((x), (y)) && ((x) < (y) || (y) < (x))) +# endif + +/* Return nonzero value if arguments are unordered. */ +# ifndef isunordered +# define isunordered(x, y) \ + (fpclassify (x) == FP_NAN || fpclassify (y) == FP_NAN) +# endif + +#endif + __END_DECLS |