Scilab 6.0.2
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See the recommended documentation of this function
rat
Floating point rational approximation
Syntax
[N,D]=rat(X [,tol]) Y=rat(X [,tol])
Arguments
- X
real vector or matrix
- tol
real positive scalar, the tolerance (see below). Default value is 1d-6.
- N
integer vector or matrix
- D
integer vector or matrix
- Y
real vector or matrix
Description
[N,D] = rat(X,tol)
returns two integer matrices
so that N./D
is close toX
in the
sense that abs(N./D - X) <= tol*norm(X,1)*abs(X)
.
y=rat(x,tol)
return the quotient
N./D
The rational approximations are generated by truncating continued fraction expansions.
Examples
[n,d]=rat([3.5, 1.333333,-0.8]) [n,d]=rat(%pi) [n,d]=rat(%pi,1.d-12) n/d-%pi
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