import mir.test: shouldApprox;

laplacePDF(-2.0).shouldApprox == 0.06766764;
laplacePDF(-1.0).shouldApprox == 0.1839397;
laplacePDF(-0.5).shouldApprox == 0.3032653;
laplacePDF(0.0).shouldApprox == 0.5;
laplacePDF(0.5).shouldApprox == 0.3032653;
laplacePDF(1.0).shouldApprox == 0.1839397;
laplacePDF(2.0).shouldApprox == 0.06766764;

// Can also provide location/scale parameters
laplacePDF(-1.0, 2.0, 3.0).shouldApprox == 0.06131324;
laplacePDF(1.0, 2.0, 3.0).shouldApprox == 0.1194219;
laplacePDF(4.0, 2.0, 3.0).shouldApprox == 0.08556952;