1 /* ===-- fixunsdfsi.c - Implement __fixunsdfsi -----------------------------===
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 __fixunsdfsi for the compiler_rt library.
12 * ===----------------------------------------------------------------------===
18 /* Returns: convert a to a unsigned int, rounding toward zero.
19 * Negative values all become zero.
22 /* Assumption: double is a IEEE 64 bit floating point type
23 * su_int is a 32 bit integral type
24 * value in double is representable in su_int or is negative
25 * (no range checking performed)
28 /* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm */
30 ARM_EABI_FNALIAS(d2uiz, fixunsdfsi);
32 COMPILER_RT_ABI su_int
33 __fixunsdfsi(double a)
37 int e = ((fb.u.s.high & 0x7FF00000) >> 20) - 1023;
38 if (e < 0 || (fb.u.s.high & 0x80000000))
42 ((fb.u.s.high & 0x000FFFFF) << 11) |