diff --git a/lib/node_modules/@stdlib/stats/base/dists/gumbel/cdf/README.md b/lib/node_modules/@stdlib/stats/base/dists/gumbel/cdf/README.md
index 3473f5d3eb94..e7fa9f4196b3 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/gumbel/cdf/README.md
+++ b/lib/node_modules/@stdlib/stats/base/dists/gumbel/cdf/README.md
@@ -138,6 +138,104 @@ for ( i = 0; i < 100; i++ ) {
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+* * *
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+## C APIs
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+### Usage
+
+```c
+#include "stdlib/stats/base/dists/gumbel/cdf.h"
+```
+
+#### stdlib_base_dists_gumbel_cdf( x, mu, beta )
+
+Evaluates the [cumulative distribution function][cdf] (CDF) for a [Gumbel][gumbel-distribution] distribution with parameters `mu` (location parameter) and `beta` (scale parameter).
+
+```c
+double out = stdlib_base_dists_gumbel_cdf( 10.0, 0.0, 3.0 );
+// returns ~0.965
+```
+
+The function accepts the following arguments:
+
+- **x**: `[in] double` input value.
+- **mu**: `[in] double` location parameter.
+- **beta**: `[in] double` scale parameter.
+
+```c
+double stdlib_base_dists_gumbel_cdf( const double x, const double mu, const double beta );
+```
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+### Examples
+
+```c
+#include "stdlib/stats/base/dists/gumbel/cdf.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 beta;
+ double mu;
+ double x;
+ double y;
+ int i;
+
+ for ( i = 0; i < 25; i++ ) {
+ x = random_uniform( 0.0, 10.0 );
+ mu = random_uniform( 0.0, 10.0 );
+ beta = random_uniform( 0.0, 10.0 );
+ y = stdlib_base_dists_gumbel_cdf( x, mu, beta );
+ printf( "x: %lf, µ: %lf, β: %lf, F(x;µ,β): %lf\n", x, mu, beta, y );
+ }
+}
+```
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