48 lines
1011 B
Brainfuck
48 lines
1011 B
Brainfuck
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/* This function "t" tests the function "f" to see if computing at
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two different scales has much effect on the accuracy.
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test from f(x) to f(y) incrementing the index by d. f(i) is
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computed at two scales, scale s and then scale t, where t>s.
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the result from scale t is divided by 1 at scale s and the
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results are compared. If they are different, the function is
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said to have failed. It will then print out the value of i
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(called index) and the two original values val1 (scale s) and
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val2 (scale t) */
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define t (x,y,d,s,t) {
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auto u, v, w, i, b, c;
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if (s >= t) {
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"Bad Scales. Try again.
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"; return;
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}
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for (i = x; i < y; i += d) {
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scale = s;
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u = f(i);
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scale = t;
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v = f(i);
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scale = s;
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w = v / 1;
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b += 1;
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if (u != w) {
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c += 1;
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"
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Failed:
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"
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" index = "; i;
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" val1 = "; u;
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" val2 = "; v;
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"
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"
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}
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}
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"
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Total tests: "; b;
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"
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Total failures: "; c;
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"
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Percent failed: "; scale = 2; c*100/b;
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}
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