import mir.test: shouldApprox;

0.0.weibullCDF(3.0).shouldApprox == 0;
0.5.weibullCDF(3.0).shouldApprox == 0.1175031;
1.0.weibullCDF(3.0).shouldApprox == 0.6321206;
1.5.weibullCDF(3.0).shouldApprox == 0.9657819;

// Can also provide scale parameter
0.5.weibullCDF(2.0, 3.0).shouldApprox == 0.02739552;
1.0.weibullCDF(2.0, 3.0).shouldApprox == 0.1051607;
1.5.weibullCDF(2.0, 3.0).shouldApprox == 0.2211992;