(calcFunc-writeoutpower, math-write-out-power, calc-writeoutpower):

New functions.

diff --git a/lisp/calc/calc-alg.el b/lisp/calc/calc-alg.el
index ada18830988fac2e1f0769ec53b1b1a2c23bd035..11d550bb5d2c032cd7d1d3a7353b7f6e7c9c205b 100644 (file)
--- a/lisp/calc/calc-alg.el
+++ b/lisp/calc/calc-alg.el
@@ -91,6 +91,32 @@
                                    (calc-top-n 1))
                              (and n (list (prefix-numeric-value n)))))))
 
+;;; Write out powers (a*b*...)^n as a*b*...*a*b*...
+(defun calcFunc-writeoutpower (expr)
+  (math-normalize (math-map-tree 'math-write-out-power expr)))
+
+(defun math-write-out-power (expr)
+  (if (eq (car-safe expr) '^)
+      (let ((a (nth 1 expr))
+            (n (nth 2 expr))
+            (prod (nth 1 expr))
+            (i 1))
+        (if (and (integerp n)
+                 (> n 0))
+            (progn
+              (while (< i n)
+                (setq prod (math-mul prod a))
+                (setq i (1+ i)))
+              prod)
+          expr))
+    expr))
+
+(defun calc-writeoutpower ()
+  (interactive)
+  (calc-slow-wrapper
+   (calc-enter-result 1 "expp"
+                     (calcFunc-writeoutpower (calc-top-n 1)))))
+
 (defun calc-collect (&optional var)
   (interactive "sCollect terms involving: ")
   (calc-slow-wrapper