import mir.test: shouldApprox;

logNormalPDF(1.0).shouldApprox == 0.3989423;
logNormalPDF(2.0).shouldApprox == 0.156874;
logNormalPDF(3.0).shouldApprox == 0.07272826;

// Can include location/scale
logNormalPDF(1.0, 1, 2).shouldApprox == 0.1760327;
logNormalPDF(2.0, 1, 2).shouldApprox == 0.09856858;
logNormalPDF(3.0, 1, 2).shouldApprox == 0.06640961;