diff options
Diffstat (limited to 'lib/builtins/fixsfdi.c')
-rw-r--r-- | lib/builtins/fixsfdi.c | 54 |
1 files changed, 29 insertions, 25 deletions
diff --git a/lib/builtins/fixsfdi.c b/lib/builtins/fixsfdi.c index 4f6cfdd7a5c6..fab47e272a25 100644 --- a/lib/builtins/fixsfdi.c +++ b/lib/builtins/fixsfdi.c @@ -1,43 +1,47 @@ /* ===-- fixsfdi.c - Implement __fixsfdi -----------------------------------=== * - * The LLVM Compiler Infrastructure + * The LLVM Compiler Infrastructure * * This file is dual licensed under the MIT and the University of Illinois Open * Source Licenses. See LICENSE.TXT for details. * * ===----------------------------------------------------------------------=== - * - * This file implements __fixsfdi for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== */ -#include "int_lib.h" +#define SINGLE_PRECISION +#include "fp_lib.h" -/* Returns: convert a to a signed long long, rounding toward zero. */ +ARM_EABI_FNALIAS(f2lz, fixsfdi) -/* Assumption: float is a IEEE 32 bit floating point type - * su_int is a 32 bit integral type - * value in float is representable in di_int (no range checking performed) +#ifndef __SOFT_FP__ +/* Support for systems that have hardware floating-point; can set the invalid + * flag as a side-effect of computation. */ -/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */ - -ARM_EABI_FNALIAS(f2lz, fixsfdi) +COMPILER_RT_ABI du_int __fixunssfdi(float a); COMPILER_RT_ABI di_int __fixsfdi(float a) { - float_bits fb; - fb.f = a; - int e = ((fb.u & 0x7F800000) >> 23) - 127; - if (e < 0) - return 0; - di_int s = (si_int)(fb.u & 0x80000000) >> 31; - di_int r = (fb.u & 0x007FFFFF) | 0x00800000; - if (e > 23) - r <<= (e - 23); - else - r >>= (23 - e); - return (r ^ s) - s; + if (a < 0.0f) { + return -__fixunssfdi(-a); + } + return __fixunssfdi(a); } + +#else +/* Support for systems that don't have hardware floating-point; there are no + * flags to set, and we don't want to code-gen to an unknown soft-float + * implementation. + */ + +typedef di_int fixint_t; +typedef du_int fixuint_t; +#include "fp_fixint_impl.inc" + +COMPILER_RT_ABI di_int +__fixsfdi(fp_t a) { + return __fixint(a); +} + +#endif |