115 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixunsxfdi3 4#include "int_lib.h"5#include <stdio.h>6#include <limits.h>7 8 9#if HAS_80_BIT_LONG_DOUBLE10// Returns: convert a to a unsigned long long, rounding toward zero.11// Negative values all become zero.12 13// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes14// du_int is a 64 bit integral type15// value in long double is representable in du_int or is negative 16// (no range checking performed)17 18// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |19// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm20 21COMPILER_RT_ABI du_int __fixunsxfdi(long double a);22 23int test__fixunsxfdi(long double a, du_int expected)24{25 du_int x = __fixunsxfdi(a);26 if (x != expected)27 printf("error in __fixunsxfdi(%LA) = %llX, expected %llX\n",28 a, x, expected);29 return x != expected;30}31 32char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};33char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};34char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};35#endif36 37int main()38{39#if HAS_80_BIT_LONG_DOUBLE40 if (test__fixunsxfdi(0.0, 0))41 return 1;42 43 if (test__fixunsxfdi(0.5, 0))44 return 1;45 if (test__fixunsxfdi(0.99, 0))46 return 1;47 if (test__fixunsxfdi(1.0, 1))48 return 1;49 if (test__fixunsxfdi(1.5, 1))50 return 1;51 if (test__fixunsxfdi(1.99, 1))52 return 1;53 if (test__fixunsxfdi(2.0, 2))54 return 1;55 if (test__fixunsxfdi(2.01, 2))56 return 1;57 if (test__fixunsxfdi(-0.5, 0))58 return 1;59 if (test__fixunsxfdi(-0.99, 0))60 return 1;61 if (test__fixunsxfdi(-1.0, 0))62 return 1;63 if (test__fixunsxfdi(-1.5, 0))64 return 1;65 if (test__fixunsxfdi(-1.99, 0))66 return 1;67 if (test__fixunsxfdi(-2.0, 0))68 return 1;69 if (test__fixunsxfdi(-2.01, 0))70 return 1;71 72 if (test__fixunsxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))73 return 1;74 if (test__fixunsxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))75 return 1;76 77 if (test__fixunsxfdi(-0x1.FFFFFEp+62, 0))78 return 1;79 if (test__fixunsxfdi(-0x1.FFFFFCp+62, 0))80 return 1;81 82 if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))83 return 1;84 if (test__fixunsxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))85 return 1;86 87 if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFp+62, 0))88 return 1;89 if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFEp+62, 0))90 return 1;91 92 if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))93 return 1;94 if (test__fixunsxfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))95 return 1;96 if (test__fixunsxfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))97 return 1;98 if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))99 return 1;100 if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))101 return 1;102 103 if (test__fixunsxfdi(-0x1.0000000000000000p+63L, 0))104 return 1;105 if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))106 return 1;107 if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))108 return 1;109 110#else111 printf("skipped\n");112#endif113 return 0;114}115