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1 /* ===-- fixunsdfdi.c - Implement __fixunsdfdi -----------------------------===
2  *
3  *                     The LLVM Compiler Infrastructure
4  *
5  * This file is dual licensed under the MIT and the University of Illinois Open
6  * Source Licenses. See LICENSE.TXT for details.
7  *
8  * ===----------------------------------------------------------------------===
9  */
10 
11 #define DOUBLE_PRECISION
12 #include "fp_lib.h"
13 
ARM_EABI_FNALIAS(d2ulz,fixunsdfdi)14 ARM_EABI_FNALIAS(d2ulz, fixunsdfdi)
15 
16 #ifndef __SOFT_FP__
17 /* Support for systems that have hardware floating-point; can set the invalid
18  * flag as a side-effect of computation.
19  */
20 
21 COMPILER_RT_ABI du_int
22 __fixunsdfdi(double a)
23 {
24     if (a <= 0.0) return 0;
25     su_int high = a / 4294967296.f;               /* a / 0x1p32f; */
26     su_int low = a - (double)high * 4294967296.f; /* high * 0x1p32f; */
27     return ((du_int)high << 32) | low;
28 }
29 
30 #else
31 /* Support for systems that don't have hardware floating-point; there are no
32  * flags to set, and we don't want to code-gen to an unknown soft-float
33  * implementation.
34  */
35 
36 typedef du_int fixuint_t;
37 #include "fp_fixuint_impl.inc"
38 
39 COMPILER_RT_ABI du_int
40 __fixunsdfdi(fp_t a) {
41     return __fixuint(a);
42 }
43 
44 #endif
45