1 /* ===-- fixunssfsi.c - Implement __fixunssfsi -----------------------------===
3 * The LLVM Compiler Infrastructure
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
8 * ===----------------------------------------------------------------------===
10 * This file implements __fixunssfsi for the compiler_rt library.
12 * ===----------------------------------------------------------------------===
17 /* Returns: convert a to a unsigned int, rounding toward zero.
18 * Negative values all become zero.
21 /* Assumption: float is a IEEE 32 bit floating point type
22 * su_int is a 32 bit integral type
23 * value in float is representable in su_int or is negative
24 * (no range checking performed)
27 /* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */
29 ARM_EABI_FNALIAS(f2uiz, fixunssfsi)
31 COMPILER_RT_ABI su_int
36 int e = ((fb.u & 0x7F800000) >> 23) - 127;
37 if (e < 0 || (fb.u & 0x80000000))
39 su_int r = (fb.u & 0x007FFFFF) | 0x00800000;