Added function YQ (rat: rational approximation)

funDef.txt

@@ -853,7 +853,7 @@ XQ	2	6	3		1	1	1		true	true	true	true	str = {'@sum' '@mean' '@(x){sort(x).''}' '@
 													if numel(in)>=3 && isscalar(in{3}), in = [in(1:2) {[]} in(3:end)]; end
 													if numel(in)>=4, in{4} = str2func(str{in{4}}); end; clear str
 													out{1} = accumarray(in{:});
-YQ
+YQ	1	2	1		1	2	2		true	true	true	true	[out{:}] = rat(in{:});	rational approximation	\matlab+rat+
 ZQ	1	3	2	1	1	1	1		true	true	true	true	if numel(in)==1, out{1} = roots(in{1});	polynomial roots / evaluate polynomial / fit polynomial	(i) If $1$ input: \matlab+roots+. (ii) If $2$ inputs: \matlab+polyval+. If $3$ inputs: \matlab+polyfit+
 													elseif numel(in)==2, out{1} = polyval(in{:});
 													elseif numel(in)==3, out{1} = polyfit(in{:});

spec/funDefTable/funDefTable.tex

@@ -134,6 +134,7 @@
 \matl{ZP} & 2--5 (2 / 3) & 1--2 (1) & \matlab+pdist2+. Only predefined distance functions are allowed. This function allows flag strings in the third input to be replaced by numbers, as follows:  1: \matlab+'cityblock'+, 2: \matlab+'hamming'+, 3: \matlab+'chebychev'+, 4: \matlab+'correlation'+, 5: \matlab+'cosine'+, 6: \matlab+'seuclidean'+, 7: \matlab+'minkowski'+, 8: \matlab+'mahalanobis'+, 9: \matlab+'spearman'+, 10: \matlab+'jaccard'+, 11: \matlab+'euclidean'+ \\
 \matl{Q} & 1 & 1 & \matlab|(...)+1| \\
 \matl{XQ} & 2--6 (3) & 1 & \matlab+accumarray+. If first input is \matlab+char+ it is converted to \matlab+double+. The third input may be omitted, and then it is interpreted as \matlab+[]+. Fourth/third argument specifies an anonymous function, as follows:  1: \matlab+'@sum'+, 2: \matlab+'@mean'+, 3: \matlab+'@(x){sort(x).'}'+, 4: \matlab+'@max'+, 5: \matlab+'@min'+, 6: \matlab+'@prod'+, 7: \matlab+'@(x){x.'}'+, 8: \matlab+'@(x){x}'+, 9: \matlab+'@(x){sort(x)}'+, 10: \matlab+'@(x)x(1)'+, 11: \matlab+'@(x)x(end)'+, 12: \matlab+'@(x){cumsum(x).'}'+, 13: \matlab+'@(x){cumprod(x)}'+, 14: \matlab+'@nansum'+, 15: \matlab+'@nanmean'+, 16: \matlab+'@nanmax'+, 17: \matlab+'@nanmin'+, 18: \matlab+'@(x){cummax(x).'}'+, 19: \matlab+'@(x){cummin(x)}'+, 20: \matlab+'@(x){cummax(x).'}'+, 21: \matlab+'@(x){cummin(x)}'+ \\
+\matl{YQ} & 1--2 (1) & 1--2 (2) & \matlab+rat+ \\
 \matl{ZQ} & 1--3 (2 / 1) & 1 & (i) If $1$ input: \matlab+roots+. (ii) If $2$ inputs: \matlab+polyval+. If $3$ inputs: \matlab+polyfit+ \\
 \matl{R} & 1--2 (1 / 2) & 1 & \matlab+triu+. \sa \matl{XR}. \\
 \matl{XR} & 1--2 (1 / 2) & 1 & \matlab+triu(..., 1)+. If $2$ inputs: builds an upper triangular or symmetric matrix from a vector (or from an array in linear order). Second input indicates if the diagonal is filled/not and if the matrix is made symmetric, as follows. 0: don't use diagonal, don't make symmetric. 1: use diagonal, don't make symmetric. 2: don't use diagonal, make symmetric. 3: use diagonal, make symmetric. \sa \matl{R}, \matl{ZR} \\