1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 //===-- floatundisf_test.c - Test __floatundisf ---------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 // This file tests __floatundisf for the compiler_rt library.
13 //===----------------------------------------------------------------------===//
19 // Returns: convert a to a float, rounding toward even.
21 // Assumption: float is a IEEE 32 bit floating point type
22 // du_int is a 64 bit integral type
24 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
26 COMPILER_RT_ABI float __floatundisf(du_int a);
28 int test__floatundisf(du_int a, float expected)
30 float x = __floatundisf(a);
32 printf("error in __floatundisf(%llX) = %a, expected %a\n",
37 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
38 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
39 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
43 if (test__floatundisf(0, 0.0F))
46 if (test__floatundisf(1, 1.0F))
48 if (test__floatundisf(2, 2.0F))
51 if (test__floatundisf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62F))
53 if (test__floatundisf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62F))
56 if (test__floatundisf(0x8000008000000000ULL, 0x1p+63F))
58 if (test__floatundisf(0x8000010000000000LL, 0x1.000002p+63F))
61 if (test__floatundisf(0x8000000000000000LL, 0x1p+63F))
63 if (test__floatundisf(0x8000000000000001LL, 0x1p+63F))
66 if (test__floatundisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
68 if (test__floatundisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
71 if (test__floatundisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
74 if (test__floatundisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
76 if (test__floatundisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
78 if (test__floatundisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
80 if (test__floatundisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
82 if (test__floatundisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
85 if (test__floatundisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
87 if (test__floatundisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
89 if (test__floatundisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
91 if (test__floatundisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
93 if (test__floatundisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))