21 lines
632 B
D
21 lines
632 B
D
import std.math;
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import std.stdio;
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auto approxEquals = (double a, double b, double epsilon) => abs(a - b) < epsilon;
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void main() {
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void test(double a, double b) {
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double epsilon = 1e-18;
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writefln("%.18f, %.18f => %s", a, b, a.approxEquals(b, epsilon));
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}
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test(100000000000000.01, 100000000000000.011);
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test(100.01, 100.011);
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test(10000000000000.001 / 10000.0, 1000000000.0000001000);
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test(0.001, 0.0010000001);
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test(0.000000000000000000000101, 0.0);
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test(sqrt(2.0) * sqrt(2.0), 2.0);
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test(-sqrt(2.0) * sqrt(2.0), -2.0);
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test(3.14159265358979323846, 3.14159265358979324);
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}
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