/* ===-- fixunsxfdi.c - Implement __fixunsxfdi -----------------------------=== * * 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 __fixunsxfdi for the compiler_rt library. * * ===----------------------------------------------------------------------=== */ #if !_ARCH_PPC #include "int_lib.h" /* Returns: convert a to a unsigned long long, rounding toward zero. * Negative values all become zero. */ /* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes * du_int is a 64 bit integral type * value in long double is representable in du_int or is negative * (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 */ du_int __fixunsxfdi(long double a) { long_double_bits fb; fb.f = a; int e = (fb.u.high.s.low & 0x00007FFF) - 16383; if (e < 0 || (fb.u.high.s.low & 0x00008000)) return 0; return fb.u.low.all >> (63 - e); } #endif