1 //===-- fixunsdfsi_test.c - Test __fixunsdfsi -----------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file tests __fixunsdfsi 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 int, rounding toward zero. 18 // Negative values all become zero. 19 20 // Assumption: double is a IEEE 64 bit floating point type 21 // su_int is a 32 bit integral type 22 // value in double is representable in su_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 su_int __fixunsdfsi(double a); 28 29 int test__fixunsdfsi(double a, su_int expected) 30 { 31 su_int x = __fixunsdfsi(a); 32 if (x != expected) 33 printf("error in __fixunsdfsi(%A) = %X, expected %X\n", a, x, expected); 34 return x != expected; 35 } 36 37 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 38 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 39 40 int main() 41 { 42 if (test__fixunsdfsi(0.0, 0)) 43 return 1; 44 45 if (test__fixunsdfsi(0.5, 0)) 46 return 1; 47 if (test__fixunsdfsi(0.99, 0)) 48 return 1; 49 if (test__fixunsdfsi(1.0, 1)) 50 return 1; 51 if (test__fixunsdfsi(1.5, 1)) 52 return 1; 53 if (test__fixunsdfsi(1.99, 1)) 54 return 1; 55 if (test__fixunsdfsi(2.0, 2)) 56 return 1; 57 if (test__fixunsdfsi(2.01, 2)) 58 return 1; 59 if (test__fixunsdfsi(-0.5, 0)) 60 return 1; 61 if (test__fixunsdfsi(-0.99, 0)) 62 return 1; 63 #if !TARGET_LIBGCC 64 if (test__fixunsdfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec 65 return 1; 66 if (test__fixunsdfsi(-1.5, 0)) 67 return 1; 68 if (test__fixunsdfsi(-1.99, 0)) 69 return 1; 70 if (test__fixunsdfsi(-2.0, 0)) 71 return 1; 72 if (test__fixunsdfsi(-2.01, 0)) 73 return 1; 74 #endif 75 76 if (test__fixunsdfsi(0x1.000000p+31, 0x80000000)) 77 return 1; 78 if (test__fixunsdfsi(0x1.FFFFFEp+31, 0xFFFFFF00)) 79 return 1; 80 if (test__fixunsdfsi(0x1.FFFFFEp+30, 0x7FFFFF80)) 81 return 1; 82 if (test__fixunsdfsi(0x1.FFFFFCp+30, 0x7FFFFF00)) 83 return 1; 84 85 #if !TARGET_LIBGCC 86 if (test__fixunsdfsi(-0x1.FFFFFEp+30, 0)) 87 return 1; 88 if (test__fixunsdfsi(-0x1.FFFFFCp+30, 0)) 89 return 1; 90 #endif 91 92 if (test__fixunsdfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF)) 93 return 1; 94 if (test__fixunsdfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF)) 95 return 1; 96 if (test__fixunsdfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE)) 97 return 1; 98 99 return 0; 100 } 101
