diff options
Diffstat (limited to 'lib/isnan.c')
| -rw-r--r-- | lib/isnan.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/lib/isnan.c b/lib/isnan.c index f24f5761..a59dea79 100644 --- a/lib/isnan.c +++ b/lib/isnan.c @@ -1,5 +1,5 @@ /* Test for NaN that does not need libm. - Copyright (C) 2007-2008 Free Software Foundation, Inc. + Copyright (C) 2007-2010 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by @@ -18,6 +18,18 @@ #include <config.h> +/* Specification. */ +#ifdef USE_LONG_DOUBLE +/* Specification found in math.h or isnanl-nolibm.h. */ +extern int rpl_isnanl (long double x); +#elif ! defined USE_FLOAT +/* Specification found in math.h or isnand-nolibm.h. */ +extern int rpl_isnand (double x); +#else /* defined USE_FLOAT */ +/* Specification found in math.h or isnanf-nolibm.h. */ +extern int rpl_isnanf (float x); +#endif + #include <float.h> #include <string.h> @@ -128,10 +140,10 @@ FUNC (DOUBLE x) -Infinity, which have the same exponent. */ m.value = x; if (((m.word[EXPBIT0_WORD] ^ nan.word[EXPBIT0_WORD]) - & (EXP_MASK << EXPBIT0_BIT)) - == 0) + & (EXP_MASK << EXPBIT0_BIT)) + == 0) return (memcmp (&m.value, &plus_inf, SIZE) != 0 - && memcmp (&m.value, &minus_inf, SIZE) != 0); + && memcmp (&m.value, &minus_inf, SIZE) != 0); else return 0; } |