--- a/macros.xml	Fri Feb 12 21:20:32 2021 +0000
+++ b/macros.xml	Sat Jun 19 14:15:41 2021 +0000
@@ -383,6 +383,7 @@
     =========== ========== ========== ===================== ========== ============
 
 
+   
   Regular_expression_ functions are included for: 
 
   ::
@@ -423,7 +424,33 @@
     James       Smith      20/10/80
     =========== ========== ==========
 
-.. _Regular_expression: https://docs.python.org/release/2.7/library/re.html
+  Math_ functions *( python math library: https://docs.python.org/3.6/library/math.html )*:
+
+  acos(x), acosh(x), asin(x), asinh(x), atan(x), atanh(x), atan2(x, y), ceil(x), cos(x), cosh(x), degrees(x), exp(x), expm1(x), fabs(x), floor(x), fmod(x, y), log(b,x), log(x), log10(x), log1p(x), log2(x), mod(x, y), pow(x, y), radians(x), sin(x), sinh(x), sqrt(x), tan(x), tanh(x), trunc(x)
+
+
+  ::
+
+    Query:
+
+    SELECT SaleAmount, floor(SaleAmount) as "dollars"
+    FROM sales
+
+  Results:
+    
+    ============  ========
+      SaleAmount   dollars
+    ============  ========
+          100.22       100
+           99.95        99
+          122.95       122
+          100.00       100
+          555.55       555
+    ============  ========
+  
+
+.. _Regular_expression: https://docs.python.org/3.9/library/re.html
+.. _Math: https://docs.python.org/3.9/library/math.html
 .. _SQLite: http://www.sqlite.org/index.html
 .. _SQLite_functions: http://www.sqlite.org/docs.html