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7.10.6.11 ncratFromString

Procedure from library ncrat.lib (see ncrat_lib).

Usage:
ncrat f = ncratFromString(s);
s of type string

Return:
read string s into ncrat f

Example:
 
LIB "ncrat.lib";
ncInit(list("x", "y", "z"));
ncrat f = ncratFromString("2*x*y");
print(f);
==> 2*x*y

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