1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_fixunssfti
3 // REQUIRES: int128
4 
5 #include "int_lib.h"
6 #include <stdio.h>
7 
8 #ifdef CRT_HAS_128BIT
9 
10 // Returns: convert a to a unsigned long long, rounding toward zero.
11 //          Negative values all become zero.
12 
13 // Assumption: float is a IEEE 32 bit floating point type
14 //             tu_int is a 64 bit integral type
15 //             value in float is representable in tu_int or is negative
16 //                 (no range checking performed)
17 
18 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
19 
20 COMPILER_RT_ABI tu_int __fixunssfti(float a);
21 
test__fixunssfti(float a,tu_int expected)22 int test__fixunssfti(float a, tu_int expected)
23 {
24     tu_int x = __fixunssfti(a);
25     if (x != expected)
26     {
27         utwords xt;
28         xt.all = x;
29         utwords expectedt;
30         expectedt.all = expected;
31         printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
32                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
33     }
34     return x != expected;
35 }
36 
37 char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};
38 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
39 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
40 
41 #endif
42 
main()43 int main()
44 {
45 #ifdef CRT_HAS_128BIT
46     if (test__fixunssfti(0.0F, 0))
47         return 1;
48 
49     if (test__fixunssfti(0.5F, 0))
50         return 1;
51     if (test__fixunssfti(0.99F, 0))
52         return 1;
53     if (test__fixunssfti(1.0F, 1))
54         return 1;
55     if (test__fixunssfti(1.5F, 1))
56         return 1;
57     if (test__fixunssfti(1.99F, 1))
58         return 1;
59     if (test__fixunssfti(2.0F, 2))
60         return 1;
61     if (test__fixunssfti(2.01F, 2))
62         return 1;
63     if (test__fixunssfti(-0.5F, 0))
64         return 1;
65     if (test__fixunssfti(-0.99F, 0))
66         return 1;
67 #if !TARGET_LIBGCC
68     if (test__fixunssfti(-1.0F, 0))  // libgcc ignores "returns 0 for negative input" spec
69         return 1;
70     if (test__fixunssfti(-1.5F, 0))
71         return 1;
72     if (test__fixunssfti(-1.99F, 0))
73         return 1;
74     if (test__fixunssfti(-2.0F, 0))
75         return 1;
76     if (test__fixunssfti(-2.01F, 0))
77         return 1;
78 #endif
79 
80     if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000ULL))
81         return 1;
82     if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000ULL))
83         return 1;
84     if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
85         return 1;
86     if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
87         return 1;
88 
89     if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000ULL, 0)))
90         return 1;
91     if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000ULL, 0)))
92         return 1;
93     if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
94         return 1;
95     if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
96         return 1;
97 
98 #if !TARGET_LIBGCC
99     if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
100         return 1;
101     if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
102         return 1;
103     if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
104         return 1;
105     if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
106         return 1;
107 #endif
108 
109 #endif
110    return 0;
111 }
112