1 //===-- fixxfdi_test.c - Test __fixxfdi -----------------------------------===// 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 __fixxfdi for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "int_lib.h" 15 #include <stdio.h> 16 17 18 #if HAS_80_BIT_LONG_DOUBLE 19 // Returns: convert a to a signed long long, rounding toward zero. 20 21 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes 22 // su_int is a 32 bit integral type 23 // value in long double is representable in di_int (no range checking performed) 24 25 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | 26 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 27 28 di_int __fixxfdi(long double a); 29 30 int test__fixxfdi(long double a, di_int expected) 31 { 32 di_int x = __fixxfdi(a); 33 if (x != expected) 34 printf("error in __fixxfdi(%LA) = %llX, expected %llX\n", 35 a, x, expected); 36 return x != expected; 37 } 38 39 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; 40 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 41 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0}; 42 #endif 43 44 int main() 45 { 46 #if HAS_80_BIT_LONG_DOUBLE 47 if (test__fixxfdi(0.0, 0)) 48 return 1; 49 50 if (test__fixxfdi(0.5, 0)) 51 return 1; 52 if (test__fixxfdi(0.99, 0)) 53 return 1; 54 if (test__fixxfdi(1.0, 1)) 55 return 1; 56 if (test__fixxfdi(1.5, 1)) 57 return 1; 58 if (test__fixxfdi(1.99, 1)) 59 return 1; 60 if (test__fixxfdi(2.0, 2)) 61 return 1; 62 if (test__fixxfdi(2.01, 2)) 63 return 1; 64 if (test__fixxfdi(-0.5, 0)) 65 return 1; 66 if (test__fixxfdi(-0.99, 0)) 67 return 1; 68 if (test__fixxfdi(-1.0, -1)) 69 return 1; 70 if (test__fixxfdi(-1.5, -1)) 71 return 1; 72 if (test__fixxfdi(-1.99, -1)) 73 return 1; 74 if (test__fixxfdi(-2.0, -2)) 75 return 1; 76 if (test__fixxfdi(-2.01, -2)) 77 return 1; 78 79 if (test__fixxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) 80 return 1; 81 if (test__fixxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) 82 return 1; 83 84 if (test__fixxfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL)) 85 return 1; 86 if (test__fixxfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL)) 87 return 1; 88 89 if (test__fixxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) 90 return 1; 91 if (test__fixxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) 92 return 1; 93 94 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL)) 95 return 1; 96 if (test__fixxfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL)) 97 return 1; 98 99 if (test__fixxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL)) 100 return 1; 101 if (test__fixxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL)) 102 return 1; 103 104 if (test__fixxfdi(-0x1.0000000000000000p+63L, 0x8000000000000000LL)) 105 return 1; 106 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0x8000000000000001LL)) 107 return 1; 108 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0x8000000000000002LL)) 109 return 1; 110 111 #endif 112 return 0; 113 } 114
