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#include <stdio.h>
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int f(int r0) {
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int r2 = 1;
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int r1 = 1;
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back16:
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r2 = r2 * r0;
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r0 = r0 - r1;
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if (r0 > r1) {
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goto back16;
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}
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return r2;
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}
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int main() {
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int vals[] = {2, 3, 4, 9};
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for (int i=0; i<4; i++) {
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printf("f( r0=%d ) = %d\n", vals[i], f(vals[i]));
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}
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return 0;
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}
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