1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: x86-target-arch
4 //===-- fixunsxfti_test.c - Test __fixunsxfti -----------------------------===//
6 // The LLVM Compiler Infrastructure
8 // This file is dual licensed under the MIT and the University of Illinois Open
9 // Source Licenses. See LICENSE.TXT for details.
11 //===----------------------------------------------------------------------===//
13 // This file tests __fixunsxfti for the compiler_rt library.
15 //===----------------------------------------------------------------------===//
20 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
22 // Returns: convert a to a unsigned long long, rounding toward zero.
23 // Negative values all become zero.
25 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
26 // tu_int is a 64 bit integral type
27 // value in long double is representable in tu_int or is negative
28 // (no range checking performed)
30 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
31 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
33 COMPILER_RT_ABI tu_int __fixunsxfti(long double a);
35 int test__fixunsxfti(long double a, tu_int expected)
37 tu_int x = __fixunsxfti(a);
43 expectedt.all = expected;
44 printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
45 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
50 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
51 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
52 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
58 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
59 if (test__fixunsxfti(0.0, 0))
62 if (test__fixunsxfti(0.5, 0))
64 if (test__fixunsxfti(0.99, 0))
66 if (test__fixunsxfti(1.0, 1))
68 if (test__fixunsxfti(1.5, 1))
70 if (test__fixunsxfti(1.99, 1))
72 if (test__fixunsxfti(2.0, 2))
74 if (test__fixunsxfti(2.01, 2))
76 if (test__fixunsxfti(-0.5, 0))
78 if (test__fixunsxfti(-0.99, 0))
80 if (test__fixunsxfti(-1.0, 0))
82 if (test__fixunsxfti(-1.5, 0))
84 if (test__fixunsxfti(-1.99, 0))
86 if (test__fixunsxfti(-2.0, 0))
88 if (test__fixunsxfti(-2.01, 0))
91 if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
93 if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
96 if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
98 if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
101 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
103 if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
106 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
108 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
111 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
113 if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
115 if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
117 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
119 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
122 if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
124 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
126 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
129 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
131 if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
133 if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
135 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
137 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))