diff options
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/fixxfdi.c')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/fixxfdi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/contrib/compiler-rt/lib/builtins/fixxfdi.c b/contrib/compiler-rt/lib/builtins/fixxfdi.c index afc79d8664d8..011787f9e4b4 100644 --- a/contrib/compiler-rt/lib/builtins/fixxfdi.c +++ b/contrib/compiler-rt/lib/builtins/fixxfdi.c @@ -19,7 +19,7 @@ /* Returns: convert a to a signed long long, rounding toward zero. */ /* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes - * su_int is a 32 bit integral type + * di_int is a 64 bit integral type * value in long double is representable in di_int (no range checking performed) */ @@ -30,11 +30,15 @@ COMPILER_RT_ABI di_int __fixxfdi(long double a) { + const di_int di_max = (di_int)((~(du_int)0) / 2); + const di_int di_min = -di_max - 1; long_double_bits fb; fb.f = a; int e = (fb.u.high.s.low & 0x00007FFF) - 16383; if (e < 0) return 0; + if ((unsigned)e >= sizeof(di_int) * CHAR_BIT) + return a > 0 ? di_max : di_min; di_int s = -(si_int)((fb.u.high.s.low & 0x00008000) >> 15); di_int r = fb.u.low.all; r = (du_int)r >> (63 - e); |