1 //===-- floatdisf_test.c - Test __floatdisf -------------------------------===// 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 // 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 } 96
