78 lines
3.2 KiB
C
78 lines
3.2 KiB
C
#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(1.0001, 0, 1);
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TEST_ASSERT(lmath);
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printf("log(1e-150) = %d\n", logmath_log(lmath, 1e-150));
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TEST_EQUAL_LOG(logmath_log(lmath, 1e-150), -3454050);
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printf("exp(log(1e-150)) = %e\n",logmath_exp(lmath, logmath_log(lmath, 1e-150)));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, logmath_log(lmath, 1e-150)), 1e-150);
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printf("log(1e-48) = %d\n", logmath_log(lmath, 1e-48));
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printf("exp(log(1e-48)) = %e\n",logmath_exp(lmath, logmath_log(lmath, 1e-48)));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, logmath_log(lmath, 1e-48)), 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), 37378);
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printf("exp(log(42)) = %f\n",logmath_exp(lmath, logmath_log(lmath, 42)));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, logmath_log(lmath, 42)), 42);
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printf("log(1e-3 + 5e-3) = %d l+ %d = %d\n",
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logmath_log(lmath, 1e-3),
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logmath_log(lmath, 5e-3),
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logmath_add(lmath, logmath_log(lmath, 1e-3),
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logmath_log(lmath, 5e-3)));
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printf("log(1e-3 + 5e-3) = %e + %e = %e\n",
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logmath_exp(lmath, logmath_log(lmath, 1e-3)),
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logmath_exp(lmath, logmath_log(lmath, 5e-3)),
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logmath_exp(lmath, logmath_add(lmath, logmath_log(lmath, 1e-3),
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logmath_log(lmath, 5e-3))));
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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)),
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logmath_log(lmath, 42));
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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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printf("log(1e-150) = %d\n", logmath_log(lmath, 1e-150));
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TEST_EQUAL_LOG(logmath_log(lmath, 1e-150), -3454050);
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printf("exp(log(1e-150)) = %e\n",logmath_exp(lmath, logmath_log(lmath, 1e-150)));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, logmath_log(lmath, 1e-150)), 1e-150);
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printf("log(1e-48) = %d\n", logmath_log(lmath, 1e-48));
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printf("exp(log(1e-48)) = %e\n",logmath_exp(lmath, logmath_log(lmath, 1e-48)));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, logmath_log(lmath, 1e-48)), 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), 37378);
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printf("exp(log(42)) = %f\n",logmath_exp(lmath, logmath_log(lmath, 42)));
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TEST_EQUAL_FLOAT(logmath_exp(lmath, logmath_log(lmath, 42)), 41.99);
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printf("log(1e-3 + 5e-3) = %d l+ %d = %d\n",
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logmath_log(lmath, 1e-3),
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logmath_log(lmath, 5e-3),
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logmath_add(lmath, logmath_log(lmath, 1e-3),
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logmath_log(lmath, 5e-3)));
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printf("log(1e-3 + 5e-3) = %e + %e = %e\n",
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logmath_exp(lmath, logmath_log(lmath, 1e-3)),
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logmath_exp(lmath, logmath_log(lmath, 5e-3)),
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logmath_exp(lmath, logmath_add(lmath, logmath_log(lmath, 1e-3),
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logmath_log(lmath, 5e-3))));
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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)),
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logmath_log(lmath, 42));
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return 0;
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}
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