diff options
Diffstat (limited to 'mpfr-impl.h')
| -rw-r--r-- | mpfr-impl.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/mpfr-impl.h b/mpfr-impl.h index 4cc131504..0d2c41124 100644 --- a/mpfr-impl.h +++ b/mpfr-impl.h @@ -262,6 +262,16 @@ typedef unsigned long int mpfr_uexp_t; #endif #define MPFR_LIMBS_PER_DOUBLE ((IEEE_DBL_MANT_DIG-1)/BITS_PER_MP_LIMB+1) +/* Visual C++ doesn't support +1.0/.00, -1.0/0.0 and 0.0/0.0 +#if defined(_MSC_VER) && defined(_WIN32) && (_MSC_VER >= 1200) +# define DBL_POS_INF ((double)0x7ff0000000000000ull) +# define DBL_NEG_INF ((double)0xfff0000000000000ull) +# define DBL_NAN ((double)0x7ff8000000000000ull) +#else */ +#define DBL_POS_INF ((double) 1.0/0.0) +#define DBL_NEG_INF ((double)-1.0/0.0) +#define DBL_NAN ((double) 0.0/0.0) + /* for x of type ieee_double_extract */ #if _GMP_IEEE_FLOATS typedef union ieee_double_extract Ieee_double_extract; @@ -274,13 +284,10 @@ typedef union ieee_double_extract Ieee_double_extract; ((((Ieee_double_extract *)&(x))->s.manl != 0) || \ (((Ieee_double_extract *)&(x))->s.manh != 0))) #else -# define DOUBLE_ISINF(x) (((x)==((double)+1.0/0.0))||((x)==((double)-1.0/0.0))) -# define DOUBLE_ISNAN(x) ((x)!=(x)) +# define DOUBLE_ISINF(x) ((x) > DBL_MAX || (x) < -DBL_MAX) +# define DOUBLE_ISNAN(x) ((x) != (x)) #endif -#define DBL_POS_INF (1.0/0.0) -#define DBL_NEG_INF (-1.0/0.0) -#define DBL_NAN (0.0/0.0) /* macros for long doubles */ |