54 lines · c
1// REQUIRES: target-is-powerpc64le2// RUN: %clang_builtins %s %librt -o %t && %run %t3 4#include <stdint.h>5#include <stdio.h>6 7#include "fixtfti_test.h"8 9// The long double representation, with the high and low portions of10// the long double, and the corresponding bit patterns of each double.11typedef union {12 long double ld;13 double d[2]; // [0] is the high double, [1] is the low double.14 unsigned long long ull[2]; // High and low doubles as 64-bit integers.15} ldUnion;16 17__int128_t __fixtfti(long double);18 19int main(int argc, char *argv[]) {20 // Necessary long double and (unsigned) 128 bit integer21 // declarations used to compare the computed and expected results22 // from converting the IBM double-double to int128.23 ldUnion ldInput;24 __uint128_t expectedResult, computedResult;25 26 for (int i = 0; i < numTests; ++i) {27 // Set the expected 128 bit integer and the high and low28 // values of the long double input.29 ldInput.d[0] = testList[i].hiInput;30 ldInput.d[1] = testList[i].loInput;31 expectedResult = testList[i].result128;32 33 // Get the computed 128 bit integer from the long double to34 // int128 conversion. Here we cast to unsigned int128 to35 // get the bit pattern of the result.36 computedResult = (__uint128_t) __fixtfti(ldInput.ld);37 38 if (computedResult != expectedResult) {39 printf("Error for __fixtfti at input %La = ( %a , %a ):\n", ldInput.ld,40 ldInput.d[0], ldInput.d[1]);41 printf("\tExpected __int128_t: 0x%016llx 0x%016llx\n",42 (unsigned long long)(expectedResult >> 64),43 (unsigned long long)expectedResult);44 printf("\tComputed __int128_t: 0x%016llx 0x%016llx\n\n",45 (unsigned long long)(computedResult >> 64),46 (unsigned long long)computedResult);47 48 return 1;49 }50 }51 52 return 0;53}54