| /* ===-- 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. |
| * ===----------------------------------------------------------------------=== |
| /* 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 |
| __fixunsxfdi(long double a) |
| int e = (fb.u.high.s.low & 0x00007FFF) - 16383; |
| if (e < 0 || (fb.u.high.s.low & 0x00008000)) |
| if ((unsigned)e > sizeof(du_int) * CHAR_BIT) |
| return fb.u.low.all >> (63 - e); |