41 lines
677 B
C++
41 lines
677 B
C++
// Compile with:
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// clang++ --target=wasm32 fraction-norm.cc -o fraction-norm.wasm -g \
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// -O0 -nostdlib -fdebug-prefix-map=$PWD=.
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struct Fraction {
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long numerator;
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long denominator;
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};
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inline long abs(long x)
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{
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return x >= 0 ? x : -x;
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}
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extern "C"
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void norm(Fraction &n)
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{
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long a = abs(n.numerator), b = abs(n.denominator);
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if (a == 0 || b == 0) return;
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do {
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a %= b;
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if (a == 0) break;
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b %= a;
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} while (b > 0);
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long gcd = a + b;
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if (n.denominator > 0) {
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n.numerator /= gcd;
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n.denominator /= gcd;
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} else {
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n.numerator /= -gcd;
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n.denominator /= -gcd;
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}
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}
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extern "C"
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void _start()
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{
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Fraction c = {6, 27};
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norm(c);
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}
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