Release calc version 2.10.2t30

help/modify

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+NAME
+    modify - modify a list or matrix by changing the values of its elements
+
+SYNOPSIS
+    modify(x, y)
+
+TYPES
+    x		lvalue with list or matrix value
+    y		string
+
+    return	null value
+
+DESCRIPTION
+    For modify(x, y), y is to be the name fname of a user-defined function.
+    The value of each element of x is replaced by the value of the
+    function at that value, i.e.  if fname = "f", the value of x[[i]]
+    is changed to f(x[[i]]).
+
+    As the name indicates, modify(x) usually changes x values of elements
+    in x.  To obtain a modified copy of x without changing values in x,
+    one may xmod = x; modify(xmod, y) or more simply (xmod = x, y).
+
+EXAMPLE
+    > define f(x) = x^2
+    > A = list(2,4,6)
+    > modify(A, "f")
+    > print A
+
+    list (3 elements, 3 nonzero):
+	  [[0]] = 4
+	  [[1]] = 16
+	  [[3]] = 36
+
+LIMITS
+    none
+
+LIBRARY
+    none
+
+SEE ALSO
+    makelist