Write formatted data to a string.

  [S,ERRMSG] = SPRINTF(FORMAT478570,A,...) formats the data in matrix A

  (and in any additional matrix arguments), under control of the

  specified FORMAT478570 string, and returns it in the MATLAB string variable

  S. ERRMSG is an optional output argument that returns an error

  message string if an error occurred or an empty matrix if an error

  did not occur.



  SPRINTF is the same as FPRINTF1H1C3CP except that it returns the data in

  a MATLAB string variable rather than writing it to a file.



         FORMAT478570 is a string containing C language conversion specifications.

         Conversion specifications involve the character %, optional flags,

         optional width and precision fields, optional subtype specifier, and

         conversion characters d, i, o, u, x, X, f, e, E, g, G, c, and s.

         See a C manual for complete details.



         SPRINTF behaves like ANSI C with certain exceptions and extensions.

         These include:



         1. If the MATLAB double doesn't convert exactly to the datatype

            associated with the conversion specifier then e format is used.

            You must explicitly convert non-integral MATLAB values to

            integral values if you plan to use an integral conversion

            specifier like d and get the expected ANSI C behavior.

         2. The following non-standard subtype specifiers are supported for

            conversion characters o, u, x, and X.



            t    - The underlying C datatype is a float rather than an

                   unsigned integer.

            b    - The underlying C datatype is a double rather than an

                   unsigned integer.



            For example, to print out in hex a double value use a format like




  SPRINTF differs from its C language namesake in an important

  respect - it is "vectorized" for the case when A is nonscalar. The

  format string is recycled through the elements of A (columnwise) until

  all the elements are used up. It is then recycled in a similar manner, 

  without reinitializing, through any additional matrix arguments.



  For example, the statement



      S = sprintf('rho is %5.3f',(1+sqrt(5))/2)



  produces the string



      S = 'rho is 1.618'