docs: math, cmath: Add port availability information.

pfalcon · pfalcon · commit c4ab8895e8c0 · 2016-06-01T22:12:39.000+03:00
diff --git a/docs/library/cmath.rst b/docs/library/cmath.rst
@@ -4,9 +4,12 @@
 .. module:: cmath
    :synopsis: mathematical functions for complex numbers
 
-The ``cmath`` module provides some basic mathematical funtions for
+The ``cmath`` module provides some basic mathematical functions for
 working with complex numbers.
 
+Availability: not available on WiPy and ESP8266. Floating point support
+required for this module.
+
 Functions
 ---------
 
diff --git a/docs/library/math.rst b/docs/library/math.rst
@@ -9,6 +9,9 @@ working with floating-point numbers.
 
 *Note:* On the pyboard, floating-point numbers have 32-bit precision.
 
+Availability: not available on WiPy. Floating point support required
+for this module.
+
 Functions
 ---------
 
