import mir.test: shouldApprox;

logisticPDF(-2.0).shouldApprox == 0.1049936;
logisticPDF(-1.0).shouldApprox == 0.1966119;
logisticPDF(-0.5).shouldApprox == 0.2350037;
logisticPDF(0.0).shouldApprox == 0.25;
logisticPDF(0.5).shouldApprox == 0.2350037;
logisticPDF(1.0).shouldApprox == 0.1966119;
logisticPDF(2.0).shouldApprox == 0.1049936;

// Can also provide location/scale parameters
logisticPDF(-1.0, 2.0, 3.0).shouldApprox == 0.06553731;
logisticPDF(1.0, 2.0, 3.0).shouldApprox == 0.08106072;
logisticPDF(4.0, 2.0, 3.0).shouldApprox == 0.07471913;