| 1 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
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| 2 | // REQUIRES: librt_has_truncxfhf2 |
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| 3 | |
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| 4 | #include <stdio.h> |
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| 5 | |
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| 6 | #include "fp_test.h" |
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| 7 | |
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| 8 | #if HAS_80_BIT_LONG_DOUBLE |
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| 9 | |
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| 10 | TYPE_FP16 __truncxfhf2(xf_float f); |
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| 11 | |
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| 12 | int test_truncxfhf2(uint16_t inputHi, uint64_t inputLo, uint16_t e) { |
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| 13 | xf_float a = F80FromRep80(hi: inputHi, lo: inputLo); |
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| 14 | TYPE_FP16 x = __truncxfhf2(f: a); |
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| 15 | int ret = compareResultH(result: x, expected: e); |
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| 16 | if (ret) { |
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| 17 | printf(format: "error in test__truncxfhf2(%Lf) = %#.4x, " |
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| 18 | "expected %#.4x\n" , |
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| 19 | a, toRep16(x), e); |
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| 20 | } |
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| 21 | return ret; |
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| 22 | } |
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| 23 | |
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| 24 | int main() { |
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| 25 | // Small positive value |
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| 26 | if (test_truncxfhf2(UINT16_C(0x3ffb), UINT64_C(0xccc0000000000000), |
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| 27 | UINT16_C(0x2e66))) |
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| 28 | return 1; |
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| 29 | |
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| 30 | // Small negative value |
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| 31 | if (test_truncxfhf2(UINT16_C(0xbffb), UINT64_C(0xccc0000000000000), |
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| 32 | UINT16_C(0xae66))) |
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| 33 | return 1; |
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| 34 | |
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| 35 | // Zero |
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| 36 | if (test_truncxfhf2(UINT16_C(0x0), UINT64_C(0x0), UINT16_C(0))) |
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| 37 | return 1; |
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| 38 | |
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| 39 | // Smallest positive non-zero value |
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| 40 | if (test_truncxfhf2(UINT16_C(0x3fef), UINT64_C(0x8000000000000000), |
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| 41 | UINT16_C(0x0100))) |
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| 42 | return 1; |
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| 43 | |
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| 44 | // Smallest negative non-zero value |
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| 45 | if (test_truncxfhf2(UINT16_C(0xbfef), UINT64_C(0x8000000000000000), |
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| 46 | UINT16_C(0x8100))) |
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| 47 | return 1; |
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| 48 | |
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| 49 | // Positive infinity |
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| 50 | if (test_truncxfhf2(UINT16_C(0x7fff), UINT64_C(0x8000000000000000), |
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| 51 | UINT16_C(0x7c00))) |
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| 52 | return 1; |
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| 53 | |
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| 54 | // Negative infinity |
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| 55 | if (test_truncxfhf2(UINT16_C(0xffff), UINT64_C(0x8000000000000000), |
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| 56 | UINT16_C(0xfc00))) |
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| 57 | return 1; |
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| 58 | |
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| 59 | // NaN |
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| 60 | if (test_truncxfhf2(UINT16_C(0x7fff), UINT64_C(0xc000000000000000), |
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| 61 | UINT16_C(0x7e00))) |
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| 62 | return 1; |
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| 63 | |
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| 64 | return 0; |
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| 65 | } |
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| 66 | |
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| 67 | #else |
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| 68 | |
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| 69 | int main() { |
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| 70 | printf("skipped\n" ); |
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| 71 | return 0; |
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| 72 | } |
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| 73 | |
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| 74 | #endif |
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| 75 | |
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