| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 1 | //===-- floatdisf_test.c - Test __floatdisf -------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| Howard Hinnant | 9ad441f | 2010-11-16 22:13:33 +0000 | [diff] [blame] | 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file tests __floatdisf for the compiler_rt library. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "int_lib.h" |
| 15 | #include <float.h> |
| 16 | #include <stdio.h> |
| 17 | |
| 18 | // Returns: convert a to a float, rounding toward even. |
| 19 | |
| 20 | // Assumption: float is a IEEE 32 bit floating point type |
| 21 | // di_int is a 64 bit integral type |
| 22 | |
| 23 | // seee eeee emmm mmmm mmmm mmmm mmmm mmmm |
| 24 | |
| 25 | float __floatdisf(di_int a); |
| 26 | |
| 27 | int test__floatdisf(di_int a, float expected) |
| 28 | { |
| 29 | float x = __floatdisf(a); |
| 30 | if (x != expected) |
| 31 | printf("error in __floatdisf(%llX) = %a, expected %a\n", |
| 32 | a, x, expected); |
| 33 | return x != expected; |
| 34 | } |
| 35 | |
| 36 | char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; |
| 37 | char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0}; |
| 38 | char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0}; |
| 39 | |
| 40 | int main() |
| 41 | { |
| 42 | if (test__floatdisf(0, 0.0F)) |
| 43 | return 1; |
| 44 | |
| 45 | if (test__floatdisf(1, 1.0F)) |
| 46 | return 1; |
| 47 | if (test__floatdisf(2, 2.0F)) |
| 48 | return 1; |
| 49 | if (test__floatdisf(-1, -1.0F)) |
| 50 | return 1; |
| 51 | if (test__floatdisf(-2, -2.0F)) |
| 52 | return 1; |
| 53 | |
| 54 | if (test__floatdisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F)) |
| 55 | return 1; |
| 56 | if (test__floatdisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F)) |
| 57 | return 1; |
| 58 | |
| 59 | if (test__floatdisf(0x8000008000000000LL, -0x1.FFFFFEp+62F)) |
| 60 | return 1; |
| 61 | if (test__floatdisf(0x8000010000000000LL, -0x1.FFFFFCp+62F)) |
| 62 | return 1; |
| 63 | |
| 64 | if (test__floatdisf(0x8000000000000000LL, -0x1.000000p+63F)) |
| 65 | return 1; |
| 66 | if (test__floatdisf(0x8000000000000001LL, -0x1.000000p+63F)) |
| 67 | return 1; |
| 68 | |
| 69 | if (test__floatdisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F)) |
| 70 | return 1; |
| 71 | |
| 72 | if (test__floatdisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F)) |
| 73 | return 1; |
| 74 | if (test__floatdisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F)) |
| 75 | return 1; |
| 76 | if (test__floatdisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F)) |
| 77 | return 1; |
| 78 | if (test__floatdisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F)) |
| 79 | return 1; |
| 80 | if (test__floatdisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F)) |
| 81 | return 1; |
| 82 | |
| 83 | if (test__floatdisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F)) |
| 84 | return 1; |
| 85 | if (test__floatdisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F)) |
| 86 | return 1; |
| 87 | if (test__floatdisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F)) |
| 88 | return 1; |
| 89 | if (test__floatdisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F)) |
| 90 | return 1; |
| 91 | if (test__floatdisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F)) |
| 92 | return 1; |
| 93 | |
| 94 | return 0; |
| 95 | } |