1 //===-- fixunsdfdi_test.c - Test __fixunsdfdi -----------------------------===// 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 __fixunsdfdi for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "int_lib.h" 15 #include <stdio.h> 16 17 // Returns: convert a to a unsigned long long, rounding toward zero. 18 // Negative values all become zero. 19 20 // Assumption: double is a IEEE 64 bit floating point type 21 // du_int is a 64 bit integral type 22 // value in double is representable in du_int or is negative 23 // (no range checking performed) 24 25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 26 27 du_int __fixunsdfdi(double a); 28 29 int test__fixunsdfdi(double a, du_int expected) 30 { 31 du_int x = __fixunsdfdi(a); 32 if (x != expected) 33 printf("error in __fixunsdfdi(%A) = %llX, expected %llX\n", a, x, expected); 34 return x != expected; 35 } 36 37 char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0}; 38 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 39 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 40 41 int main() 42 { 43 if (test__fixunsdfdi(0.0, 0)) 44 return 1; 45 46 if (test__fixunsdfdi(0.5, 0)) 47 return 1; 48 if (test__fixunsdfdi(0.99, 0)) 49 return 1; 50 if (test__fixunsdfdi(1.0, 1)) 51 return 1; 52 if (test__fixunsdfdi(1.5, 1)) 53 return 1; 54 if (test__fixunsdfdi(1.99, 1)) 55 return 1; 56 if (test__fixunsdfdi(2.0, 2)) 57 return 1; 58 if (test__fixunsdfdi(2.01, 2)) 59 return 1; 60 if (test__fixunsdfdi(-0.5, 0)) 61 return 1; 62 if (test__fixunsdfdi(-0.99, 0)) 63 return 1; 64 #if !TARGET_LIBGCC 65 if (test__fixunsdfdi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec 66 return 1; 67 if (test__fixunsdfdi(-1.5, 0)) 68 return 1; 69 if (test__fixunsdfdi(-1.99, 0)) 70 return 1; 71 if (test__fixunsdfdi(-2.0, 0)) 72 return 1; 73 if (test__fixunsdfdi(-2.01, 0)) 74 return 1; 75 #endif 76 77 if (test__fixunsdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) 78 return 1; 79 if (test__fixunsdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) 80 return 1; 81 82 #if !TARGET_LIBGCC 83 if (test__fixunsdfdi(-0x1.FFFFFEp+62, 0)) 84 return 1; 85 if (test__fixunsdfdi(-0x1.FFFFFCp+62, 0)) 86 return 1; 87 #endif 88 89 if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800LL)) 90 return 1; 91 if (test__fixunsdfdi(0x1.0000000000000p+63, 0x8000000000000000LL)) 92 return 1; 93 if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) 94 return 1; 95 if (test__fixunsdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) 96 return 1; 97 98 #if !TARGET_LIBGCC 99 if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFFp+62, 0)) 100 return 1; 101 if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFEp+62, 0)) 102 return 1; 103 #endif 104 105 return 0; 106 } 107