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#include <stdio.h>
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#include <math.h>
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#define TEST_ASSERT(x) if (!(x)) { fprintf(stderr, "FAIL: %s\n", #x); exit(1); }
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#define EPSILON 0.001
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#define TEST_EQUAL(a,b) TEST_ASSERT((a) == (b))
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#define TEST_EQUAL_FLOAT(a,b) TEST_ASSERT(fabs((a) - (b)) < EPSILON)
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