53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
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// REQUIRES: target-is-powerpc64le
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// RUN: %clang_builtins %s %librt -o %t && %run %t
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#include <stdint.h>
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#include <stdio.h>
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#include "fixunstfti_test.h"
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/* The long double representation, with the high and low portions of
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* the long double, and the corresponding bit patterns of each double. */
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typedef union {
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long double ld;
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double d[2]; /* [0] is the high double, [1] is the low double. */
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unsigned long long ull[2]; /* High and low doubles as 64-bit integers. */
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} ldUnion;
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__uint128_t __fixunstfti(long double);
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int main(int argc, char *argv[]) {
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/* Necessary long double and (unsigned) 128 bit integer
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* declarations used to compare the computed and expected results
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* from converting the IBM double-double to int128. */
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ldUnion ldInput;
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__uint128_t expectedResult, computedResult;
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for (int i = 0; i < numTests; ++i) {
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/* Set the expected 128 bit integer and the high and low
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* values of the long double input. */
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ldInput.d[0] = testList[i].hiInput;
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ldInput.d[1] = testList[i].loInput;
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expectedResult = testList[i].result128;
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/* Get the computed 128 bit integer from the long double->
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* uint128 conversion, and check for errors between results. */
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computedResult = __fixunstfti(ldInput.ld);
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if (computedResult != expectedResult) {
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printf("Error for __fixunstfti at input %La = ( %a , %a ):\n", ldInput.ld,
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ldInput.d[0], ldInput.d[1]);
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printf("\tExpected __uint128_t: 0x%016llx 0x%016llx\n",
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(unsigned long long)(expectedResult >> 64),
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(unsigned long long)expectedResult);
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printf("\tComputed __uint128_t: 0x%016llx 0x%016llx\n\n",
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(unsigned long long)(computedResult >> 64),
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(unsigned long long)computedResult);
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return 1;
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}
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}
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return 0;
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}
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