1 // RUN: %clang_builtins %s %librt -o %t && %run %t 2 // REQUIRES: librt_has_fixunsxfsi 3 4 #include "int_lib.h" 5 #include <stdio.h> 6 7 #if HAS_80_BIT_LONG_DOUBLE 8 // Returns: convert a to a unsigned int, rounding toward zero. 9 // Negative values all become zero. 10 11 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes 12 // su_int is a 32 bit integral type 13 // value in long double is representable in su_int or is negative 14 // (no range checking performed) 15 16 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | 17 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 18 19 COMPILER_RT_ABI su_int __fixunsxfsi(long double a); 20 21 int test__fixunsxfsi(long double a, su_int expected) 22 { test__fixunstfti(long double a,tu_int expected)23 su_int x = __fixunsxfsi(a); 24 if (x != expected) 25 printf("error in __fixunsxfsi(%LA) = %X, expected %X\n", a, x, expected); 26 return x != expected; 27 } 28 29 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 30 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0}; 31 #endif 32 33 int main() 34 { 35 #if HAS_80_BIT_LONG_DOUBLE 36 if (test__fixunsxfsi(0.0, 0)) 37 return 1; 38 39 if (test__fixunsxfsi(0.5, 0)) 40 return 1; 41 if (test__fixunsxfsi(0.99, 0)) 42 return 1; 43 if (test__fixunsxfsi(1.0, 1)) 44 return 1; 45 if (test__fixunsxfsi(1.5, 1)) 46 return 1; main()47 if (test__fixunsxfsi(1.99, 1)) 48 return 1; 49 if (test__fixunsxfsi(2.0, 2)) 50 return 1; 51 if (test__fixunsxfsi(2.01, 2)) 52 return 1; 53 if (test__fixunsxfsi(-0.5, 0)) 54 return 1; 55 if (test__fixunsxfsi(-0.99, 0)) 56 return 1; 57 #if !TARGET_LIBGCC 58 if (test__fixunsxfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec 59 return 1; 60 if (test__fixunsxfsi(-1.5, 0)) 61 return 1; 62 if (test__fixunsxfsi(-1.99, 0)) 63 return 1; 64 if (test__fixunsxfsi(-2.0, 0)) 65 return 1; 66 if (test__fixunsxfsi(-2.01, 0)) 67 return 1; 68 #endif 69 70 if (test__fixunsxfsi(0x1.000000p+31, 0x80000000)) 71 return 1; 72 if (test__fixunsxfsi(0x1.FFFFFEp+31, 0xFFFFFF00)) 73 return 1; 74 if (test__fixunsxfsi(0x1.FFFFFEp+30, 0x7FFFFF80)) 75 return 1; 76 if (test__fixunsxfsi(0x1.FFFFFCp+30, 0x7FFFFF00)) 77 return 1; 78 79 #if !TARGET_LIBGCC 80 if (test__fixunsxfsi(-0x1.FFFFFEp+30, 0)) 81 return 1; 82 if (test__fixunsxfsi(-0x1.FFFFFCp+30, 0)) 83 return 1; 84 #endif 85 86 if (test__fixunsxfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF)) 87 return 1; 88 if (test__fixunsxfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF)) 89 return 1; 90 if (test__fixunsxfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE)) 91 return 1; 92 93 #endif 94 return 0; 95 } 96