Mercurial > hg > octave-nkf
diff scripts/polynomial/polyval.m @ 904:3470f1e25a79
[project @ 1994-11-09 21:22:15 by jwe]
| author | jwe |
|---|---|
| date | Wed, 09 Nov 1994 21:22:15 +0000 |
| parents | e79ff1f4df3c |
| children | f558749713f1 |
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--- a/scripts/polynomial/polyval.m +++ b/scripts/polynomial/polyval.m @@ -1,19 +1,20 @@ function y = polyval(c,x) -#Evaluate a polynomial. -# -#In octave, a polynomial is represented by it's coefficients (arranged -#in descending order). For example a vector c of length n+1 corresponds -#to the following nth order polynomial -# -# p(x) = c(1) x^n + ... + c(n) x + c(n+1). -# -#polyval(c,x) will evaluate the polynomial at the specified value of x. -# -#If x is a vector or matrix, the polynomial is evaluated at each of the -#elements of x. -# -#SEE ALSO: polyvalm, poly, roots, conv, deconv, residue, filter, -# polyderiv, polyinteg + +# Evaluate a polynomial. +# +# In octave, a polynomial is represented by it's coefficients (arranged +# in descending order). For example a vector c of length n+1 corresponds +# to the following nth order polynomial +# +# p(x) = c(1) x^n + ... + c(n) x + c(n+1). +# +# polyval(c,x) will evaluate the polynomial at the specified value of x. +# +# If x is a vector or matrix, the polynomial is evaluated at each of the +# elements of x. +# +# SEE ALSO: polyvalm, poly, roots, conv, deconv, residue, filter, +# polyderiv, polyinteg # Author: # Tony Richardson @@ -21,7 +22,7 @@ # June 1994 if(nargin != 2) - error("usage: polyval(c,x)"); + usage ("polyval(c,x)"); endif if(is_matrix(c))