diff options
Diffstat (limited to 'compiler-rt/lib/builtins/floatdixf.c')
| -rw-r--r-- | compiler-rt/lib/builtins/floatdixf.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/compiler-rt/lib/builtins/floatdixf.c b/compiler-rt/lib/builtins/floatdixf.c index 140f0463be8..d88a9d9d4bf 100644 --- a/compiler-rt/lib/builtins/floatdixf.c +++ b/compiler-rt/lib/builtins/floatdixf.c @@ -9,7 +9,7 @@ * This file implements __floatdixf for the compiler_rt library. * * ===----------------------------------------------------------------------=== - */ + */ #if !_ARCH_PPC @@ -17,29 +17,28 @@ /* Returns: convert a to a long double, rounding toward even. */ -/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits - * di_int is a 64 bit integral type +/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 + * bits di_int is a 64 bit integral type */ -/* 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 long double -__floatdixf(di_int a) -{ - if (a == 0) - return 0.0; - const unsigned N = sizeof(di_int) * CHAR_BIT; - const di_int s = a >> (N-1); - a = (a ^ s) - s; - int clz = __builtin_clzll(a); - int e = (N - 1) - clz ; /* exponent */ - long_double_bits fb; - fb.u.high.s.low = ((su_int)s & 0x00008000) | /* sign */ - (e + 16383); /* exponent */ - fb.u.low.all = a << clz; /* mantissa */ - return fb.f; +COMPILER_RT_ABI long double __floatdixf(di_int a) { + if (a == 0) + return 0.0; + const unsigned N = sizeof(di_int) * CHAR_BIT; + const di_int s = a >> (N - 1); + a = (a ^ s) - s; + int clz = __builtin_clzll(a); + int e = (N - 1) - clz; /* exponent */ + long_double_bits fb; + fb.u.high.s.low = ((su_int)s & 0x00008000) | /* sign */ + (e + 16383); /* exponent */ + fb.u.low.all = a << clz; /* mantissa */ + return fb.f; } #endif /* !_ARCH_PPC */ |
