derek.holloway
7502bf64a4
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105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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// REQUIRES: librt_has_truncsfhf2
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#include <stdio.h>
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#include "fp_test.h"
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TYPE_FP16 __truncsfhf2(float a);
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int test__truncsfhf2(float a, uint16_t expected)
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{
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TYPE_FP16 x = __truncsfhf2(a);
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int ret = compareResultH(x, expected);
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if (ret){
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printf("error in test__truncsfhf2(%f) = %#.4x, "
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"expected %#.4x\n", a, toRep16(x), expected);
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}
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return ret;
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}
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char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0};
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int main()
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{
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// qNaN
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if (test__truncsfhf2(makeQNaN32(),
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UINT16_C(0x7e00)))
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return 1;
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// NaN
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if (test__truncsfhf2(makeNaN32(UINT32_C(0x8000)),
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UINT16_C(0x7e00)))
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return 1;
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// inf
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if (test__truncsfhf2(makeInf32(),
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncsfhf2(-makeInf32(),
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UINT16_C(0xfc00)))
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return 1;
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// zero
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if (test__truncsfhf2(0.0f, UINT16_C(0x0)))
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return 1;
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if (test__truncsfhf2(-0.0f, UINT16_C(0x8000)))
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return 1;
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if (test__truncsfhf2(3.1415926535f,
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UINT16_C(0x4248)))
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return 1;
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if (test__truncsfhf2(-3.1415926535f,
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UINT16_C(0xc248)))
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return 1;
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if (test__truncsfhf2(0x1.987124876876324p+100f,
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncsfhf2(0x1.987124876876324p+12f,
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UINT16_C(0x6e62)))
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return 1;
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if (test__truncsfhf2(0x1.0p+0f,
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UINT16_C(0x3c00)))
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return 1;
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if (test__truncsfhf2(0x1.0p-14f,
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UINT16_C(0x0400)))
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return 1;
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// denormal
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if (test__truncsfhf2(0x1.0p-20f,
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UINT16_C(0x0010)))
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return 1;
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if (test__truncsfhf2(0x1.0p-24f,
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UINT16_C(0x0001)))
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return 1;
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if (test__truncsfhf2(-0x1.0p-24f,
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UINT16_C(0x8001)))
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return 1;
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if (test__truncsfhf2(0x1.5p-25f,
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UINT16_C(0x0001)))
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return 1;
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// and back to zero
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if (test__truncsfhf2(0x1.0p-25f,
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UINT16_C(0x0000)))
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return 1;
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if (test__truncsfhf2(-0x1.0p-25f,
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UINT16_C(0x8000)))
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return 1;
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// max (precise)
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if (test__truncsfhf2(65504.0f,
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UINT16_C(0x7bff)))
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return 1;
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// max (rounded)
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if (test__truncsfhf2(65519.0f,
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UINT16_C(0x7bff)))
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return 1;
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// max (to +inf)
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if (test__truncsfhf2(65520.0f,
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncsfhf2(65536.0f,
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncsfhf2(-65520.0f,
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UINT16_C(0xfc00)))
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return 1;
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return 0;
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}
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