1// RUN: %clang_builtins %s %librt -o %t && %run %t 2// REQUIRES: int128 3//===-- fixdfti_test.c - Test __fixdfti -----------------------------------===// 4// 5// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 6// See https://llvm.org/LICENSE.txt for license information. 7// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 8// 9//===----------------------------------------------------------------------===// 10// 11// This file tests __fixdfti for the compiler_rt library. 12// 13//===----------------------------------------------------------------------===// 14 15#include "int_lib.h" 16#include <stdio.h> 17 18#ifdef CRT_HAS_128BIT 19 20// Returns: convert a to a signed long long, rounding toward zero. 21 22// Assumption: double is a IEEE 64 bit floating point type 23// su_int is a 32 bit integral type 24// value in double is representable in ti_int (no range checking performed) 25 26// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 27 28COMPILER_RT_ABI ti_int __fixdfti(double a); 29 30int test__fixdfti(double a, ti_int expected) 31{ 32 ti_int x = __fixdfti(a); 33 if (x != expected) 34 { 35 twords xt; 36 xt.all = x; 37 twords expectedt; 38 expectedt.all = expected; 39 printf("error in __fixdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n", 40 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low); 41 } 42 return x != expected; 43} 44 45char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; 46char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 47char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 48 49#endif 50 51int main() 52{ 53#ifdef CRT_HAS_128BIT 54 if (test__fixdfti(0.0, 0)) 55 return 1; 56 57 if (test__fixdfti(0.5, 0)) 58 return 1; 59 if (test__fixdfti(0.99, 0)) 60 return 1; 61 if (test__fixdfti(1.0, 1)) 62 return 1; 63 if (test__fixdfti(1.5, 1)) 64 return 1; 65 if (test__fixdfti(1.99, 1)) 66 return 1; 67 if (test__fixdfti(2.0, 2)) 68 return 1; 69 if (test__fixdfti(2.01, 2)) 70 return 1; 71 if (test__fixdfti(-0.5, 0)) 72 return 1; 73 if (test__fixdfti(-0.99, 0)) 74 return 1; 75 if (test__fixdfti(-1.0, -1)) 76 return 1; 77 if (test__fixdfti(-1.5, -1)) 78 return 1; 79 if (test__fixdfti(-1.99, -1)) 80 return 1; 81 if (test__fixdfti(-2.0, -2)) 82 return 1; 83 if (test__fixdfti(-2.01, -2)) 84 return 1; 85 86 if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) 87 return 1; 88 if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) 89 return 1; 90 91 if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 92 0x8000008000000000LL))) 93 return 1; 94 if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 95 0x8000010000000000LL))) 96 return 1; 97 98 if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) 99 return 1; 100 if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) 101 return 1; 102 103 if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 104 0x8000000000000400LL))) 105 return 1; 106 if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 107 0x8000000000000800LL))) 108 return 1; 109 110 if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0))) 111 return 1; 112 if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0))) 113 return 1; 114 115 if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0))) 116 return 1; 117 if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 0))) 118 return 1; 119 120#else 121 printf("skipped\n"); 122#endif 123 return 0; 124} 125