53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include "QF/mathlib.h"
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struct {
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int16_t half;
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float flt;
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} tests [] = {
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{0x3c00, 1.0f},
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{0x3c01, 1.0009765625f},
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{0xc000, -2.0f},
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{0x7bff, 65504.0f},
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{0x0400, 6.103515625e-05f},
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{0x03ff, 6.0975551605224609375e-05f},
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{0x0001, 5.9604644775390625e-08f},
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{0x0000, 0.0f},
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{0x8000, -0.0f},
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#if __GNUC_PREREQ(3,3)
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{0x7c00, __builtin_huge_val ()},
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{0xfc00, -__builtin_huge_val ()},
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#endif
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{0x3555, 0.333251953125f},
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{0x3e00, 1.5f},
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{0x0000, 0.0f},
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};
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#define num_tests (sizeof (tests) / sizeof (tests[0]))
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int
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main (int argc, const char **argv)
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{
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size_t i;
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int res = 0;
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for (i = 0; i < num_tests; i++) {
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float flt;
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int16_t half;
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flt = HalfToFloat (tests[i].half);
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half = FloatToHalf (tests[i].flt);
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if (flt != tests[i].flt || half != tests[i].half) {
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res |= 1;
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printf ("test %d failed\n", (int) i);
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printf ("expect: %4x %.20g\n", tests[i].half, tests[i].flt);
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printf ("got : %4x %.20g\n", half, flt);
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}
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}
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return res;
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}
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