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subscat(x,v,s);
replaces values in x by s according to category v
substute(x,v,s);
replaces values in x by s according to logical values in v
sumc(x);
returns sum of columns of x as a column vector
svd(x);
returns the singular values of x in a column vector
svd1(x);
as svd2, but u is r x r if r ¡ c.
{u,w,v}=svd2(x);
returns SVD of r x c matrix x, w is a diagonal matrix
svdcusv(mx);
as svd2, but does not use trapchk
svds(mx);
as svd, but does not use trapchk
svdusv(mx);
as svd1, but does not use trapchk
{...}=sysstate(vcase,y);
system;
exits
tab(col);
unsupported
tan(x);
returns tangent of x
tanh(x);
returns hyperbolic tangent of x
tempname(path,pre,ext);
returns a temporary file name
time(x);
returns the time as a 4 x 1 vector: hour, min, sec, 0
timestr(x);
prints the time as a string (x=0: current time)
tocart(x);
unsupported
toeplitz(x);
returns a toeplitz matrix constructed from x
{tok,str}=token(str);
returns the leading token and the remainder of str
topolar(xy);
unsupported
trace new[,mask];
unsupported
trap new[,mask];
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