diff --git a/lib/node_modules/@stdlib/stats/base/dists/rayleigh/logcdf/README.md b/lib/node_modules/@stdlib/stats/base/dists/rayleigh/logcdf/README.md index 80894517f49d..6d77fcb917fa 100644 --- a/lib/node_modules/@stdlib/stats/base/dists/rayleigh/logcdf/README.md +++ b/lib/node_modules/@stdlib/stats/base/dists/rayleigh/logcdf/README.md @@ -104,7 +104,7 @@ Returns a function for evaluating the logarithm of the [cumulative distribution ```javascript var mylogCDF = logcdf.factory( 0.5 ); -y = mylogCDF( 1.0 ); +var y = mylogCDF( 1.0 ); // returns ~-0.145 y = mylogCDF( 0.5 ); @@ -152,6 +152,101 @@ for ( i = 0; i < 10; i++ ) { + + +* * * + +
+ +## C APIs + + + +
+ +
+ + + + + +
+ +### Usage + +```c +#include "stdlib/stats/base/dists/rayleigh/logcdf.h" +``` + +#### stdlib_base_dists_rayleigh_logcdf( x, sigma ) + +Evaluates the logarithm of the cumulative distribution function (CDF) for a Rayleigh distribution. + +```c +double out = stdlib_base_dists_rayleigh_logcdf( 2.0, 3.0 ); +// returns ~-1.613 +``` + +The function accepts the following arguments: + +- **x**: `[in] double` input value. +- **sigma**: `[in] double` scale parameter. + +```c +double stdlib_base_dists_rayleigh_logcdf( const double x, const double sigma ); +``` + +
+ + + + + +
+ +
+ + + + + +
+ +### Examples + +```c +#include "stdlib/stats/base/dists/rayleigh/logcdf.h" +#include +#include + +static double random_uniform( const double min, const double max ) { + double v = (double)rand() / ( (double)RAND_MAX + 1.0 ); + return min + ( v*(max-min) ); +} + +int main( void ) { + double sigma; + double x; + double y; + int i; + + for ( i = 0; i < 25; i++ ) { + x = random_uniform( 0.0, 10.0 ); + sigma = random_uniform( 0.0, 10.0 ); + y = stdlib_base_dists_rayleigh_logcdf( x, sigma ); + printf( "x: %lf, σ: %lf, f(x;σ): %lf\n", x, sigma, y ); + } +} +``` + +
+ + + +
+ + +