diff options
Diffstat (limited to 'gcc/real.h')
| -rw-r--r-- | gcc/real.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/real.h b/gcc/real.h index 530a88659f7..a91061ef54d 100644 --- a/gcc/real.h +++ b/gcc/real.h @@ -294,6 +294,13 @@ do { REAL_VALUE_TYPE in = (IN); /* Make sure it's not in a register. */\ #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(a, b) REAL_VALUE_TO_TARGET_DOUBLE (a, b) #endif +/* Compare two floating-point objects for bitwise identity. + This is not the same as comparing for equality on IEEE hosts: + -0.0 equals 0.0 but they are not identical, and conversely + two NaNs might be identical but they cannot be equal. */ +#define REAL_VALUES_IDENTICAL(x, y) \ + (!bcmp ((char *) &(x), (char *) &(y), sizeof (REAL_VALUE_TYPE))) + /* Compare two floating-point values for equality. */ #ifndef REAL_VALUES_EQUAL #define REAL_VALUES_EQUAL(x, y) ((x) == (y)) |