diff options
Diffstat (limited to 'compiler-rt/lib/builtins/fixxfdi.c')
| -rw-r--r-- | compiler-rt/lib/builtins/fixxfdi.c | 41 |
1 files changed, 20 insertions, 21 deletions
diff --git a/compiler-rt/lib/builtins/fixxfdi.c b/compiler-rt/lib/builtins/fixxfdi.c index 30302e7a113..c535e808b5b 100644 --- a/compiler-rt/lib/builtins/fixxfdi.c +++ b/compiler-rt/lib/builtins/fixxfdi.c @@ -17,31 +17,30 @@ /* 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 - * di_int is a 64 bit integral type - * value in long double is representable in di_int (no range checking performed) +/* Assumption: long double is an intel 80 bit floating point type padded with 6 + * bytes di_int is a 64 bit integral type value in long double is representable + * in di_int (no range checking performed) */ -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | - * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm +/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee + * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm + * mmmm mmmm mmmm */ -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); - return (r ^ s) - s; +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); + return (r ^ s) - s; } #endif /* !_ARCH_PPC */ |
