Update main.js

Signed-off-by: Sai Srikar Dumpeti <[email protected]>

Author: saisrikardumpeti

lib/node_modules/@stdlib/math/base/special/cotd/lib/main.js

@@ -64,6 +64,10 @@ function cotd( x ) {
 		return 0.0;
 	}
 
+	if (isInteger((x / 90) / 2)) {
+		return Infinity;
+	}
+	
 	xRad = deg2rad(x);
 
 	return cot(xRad);