45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
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#include <logmath.h>
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#include "test_macros.h"
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#define LOG_EPSILON 1500
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int
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main(int argc, char *argv[])
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{
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logmath_t *lmath;
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int32 rv;
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lmath = logmath_init(1.003, 0, 1);
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TEST_ASSERT(lmath);
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printf("log(1e-48) = %d\n", logmath_log(lmath, 1e-48));
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TEST_EQUAL_LOG(logmath_log(lmath, 1e-48), -36896);
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printf("exp(log(1e-48)) = %e\n",logmath_exp(lmath, -36896));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, -36896), 1e-48);
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printf("log(42) = %d\n", logmath_log(lmath, 42));
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TEST_EQUAL_LOG(logmath_log(lmath, 42), 1247);
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printf("exp(log(42)) = %f\n",logmath_exp(lmath, 1247));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, 1247), 41.9);
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TEST_EQUAL_LOG(logmath_add(lmath, logmath_log(lmath, 1e-48),
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logmath_log(lmath, 5e-48)),
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logmath_log(lmath, 6e-48));
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TEST_EQUAL_LOG(logmath_add(lmath, logmath_log(lmath, 1e-48),
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logmath_log(lmath, 42)), 1247);
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rv = logmath_write(lmath, "tmp.logadd");
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TEST_EQUAL(rv, 0);
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logmath_free(lmath);
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lmath = logmath_read("tmp.logadd");
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TEST_ASSERT(lmath);
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TEST_EQUAL_LOG(logmath_log(lmath, 1e-48), -36896);
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TEST_EQUAL_LOG(logmath_log(lmath, 42), 1247);
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TEST_EQUAL_LOG(logmath_add(lmath, logmath_log(lmath, 1e-48),
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logmath_log(lmath, 5e-48)),
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logmath_log(lmath, 6e-48));
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TEST_EQUAL_LOG(logmath_add(lmath, logmath_log(lmath, 1e-48),
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logmath_log(lmath, 42)), 1247);
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logmath_free(lmath);
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return 0;
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}
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