diff --git a/base/assert/is-nonpositive-finite/README.md b/base/assert/is-nonpositive-finite/README.md
index 8b44f2a0f..fbc57c28d 100644
--- a/base/assert/is-nonpositive-finite/README.md
+++ b/base/assert/is-nonpositive-finite/README.md
@@ -35,10 +35,10 @@ var isNonPositiveFinite = require( '@stdlib/math/base/assert/is-nonpositive-fini
Tests if a `numeric` value is a nonpositive finite number.
```javascript
-var bool = isNonPositiveFinite( 3.14 );
+var bool = isNonPositiveFinite( -3.14 );
// returns true
-bool = isNonPositiveFinite( -2.0 );
+bool = isNonPositiveFinite( 2.0 );
// returns false
```
@@ -61,13 +61,13 @@ bool = isNonPositiveFinite( -2.0 );
```javascript
var isNonPositiveFinite = require( '@stdlib/math/base/assert/is-nonpositive-finite' );
-var bool = isNonPositiveFinite( 3.14 );
+var bool = isNonPositiveFinite( -3.14 );
// returns true
bool = isNonPositiveFinite( 0.0 );
// returns true
-bool = isNonPositiveFinite( -2.0 );
+bool = isNonPositiveFinite( 2.0 );
// returns false
bool = isNonPositiveFinite( Infinity );
@@ -81,6 +81,97 @@ bool = isNonPositiveFinite( NaN );
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
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+
+
+### Usage
+
+```c
+#include "stdlib/math/base/assert/is_nonpositive_finite.h"
+```
+
+#### stdlib_base_is_nonpositive_finite( x )
+
+Tests if a numeric value is a nonpositive finite number.
+
+```c
+#include
+
+bool out = stdlib_base_is_nonpositive_finite( -3.14 );
+// returns true
+
+out = stdlib_base_is_nonpositive_finite( 2.0 );
+// returns false
+```
+
+The function accepts the following arguments:
+
+- **x**: `[in] double` input value.
+
+```c
+bool stdlib_base_is_nonpositive_finite( const double x );
+```
+
+
+
+
+
+
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+
+
+### Examples
+
+```c
+#include "stdlib/math/base/assert/is_nonpositive_finite.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_nonpositive_finite( x[ i ] );
+ printf( "Value: %lf. Is NonPositive Finite? %s.\n", x[ i ], ( b ) ? "True" : "False" );
+ }
+}
+```
+
+
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+