1// RUN: %clang_builtins %s %librt -o %t && %run %t 2//===-- fixunsdfdi_test.c - Test __fixunsdfdi -----------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 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 27COMPILER_RT_ABI du_int __fixunsdfdi(double a); 28 29int 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 37char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0}; 38char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 39char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 40 41int 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