[Emacs-diffs] Changes to emacs/lisp/calc/calc-ext.el,v

[Jay Belanger]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Jay Belanger <jpb>      07/08/03 05:21:43

Index: calc-ext.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/calc/calc-ext.el,v
retrieving revision 1.57
retrieving revision 1.58
diff -u -b -r1.57 -r1.58
--- calc-ext.el 26 Jul 2007 05:26:40 -0000      1.57
+++ calc-ext.el 3 Aug 2007 05:21:43 -0000       1.58
@@ -2213,6 +2213,25 @@
       a
     (math-reject-arg a 'constp)))
 
+;;; Some functions for working with error forms.
+(defun math-get-value (x)
+  "Get the mean value of the error form X.
+If X is not an error form, return X."
+  (if (eq (car-safe x) 'sdev)
+      (nth 1 x)
+    x))
+       
+(defun math-get-sdev (x &optional one)
+  "Get the standard deviation of the error form X.
+If X is not an error form, return 1."
+  (if (eq (car-safe x) 'sdev)
+      (nth 2 x)
+    (if one 1 0)))
+
+(defun math-contains-sdev-p (ls)
+  "Non-nil if the list LS contains an error form."
+  (let ((ls (if (eq (car-safe ls) 'vec) (cdr ls) ls)))
+    (memq t (mapcar (lambda (x) (eq (car-safe x) 'sdev)) ls))))
 
 ;;; Coerce integer A to be a small integer.  [S I]
 (defun math-fixnum (a)