diff --git a/lib/node_modules/@stdlib/math/base/assert/is-negative-integer/README.md b/lib/node_modules/@stdlib/math/base/assert/is-negative-integer/README.md
index 05e3955df655..5c2c0f3aafed 100644
--- a/lib/node_modules/@stdlib/math/base/assert/is-negative-integer/README.md
+++ b/lib/node_modules/@stdlib/math/base/assert/is-negative-integer/README.md
@@ -100,6 +100,97 @@ bool = isNegativeInteger( NaN );
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/math/base/assert/is_negative_integer.h"
+```
+
+#### stdlib_base_is_negative_integer( x )
+
+Tests if a finite [double-precision floating-point number][ieee754] is a negative integer.
+
+```c
+#include
+
+bool out = stdlib_base_is_negative_integer( -4.0 );
+// returns true
+
+out = stdlib_base_is_negative_integer( 3.0 );
+// returns false
+```
+
+The function accepts the following arguments:
+
+- **x**: `[in] double` input value.
+
+```c
+bool stdlib_base_is_negative_integer( const double x );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/math/base/assert/is_negative_integer.h"
+#include
+#include
+
+int main( void ) {
+ const double x[] = { 5.0, -5.0, 3.14, -3.14, 0.0, 0.0/0.0 };
+
+ bool b;
+ int i;
+ for ( i = 0; i < 6; i++ ) {
+ b = stdlib_base_is_negative_integer( x[ i ] );
+ printf( "Value: %lf. Is negative integer? %s.\n", x[ i ], ( b ) ? "True" : "False" );
+ }
+}
+```
+
+
+
+
+
+
+
+
+