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- %SPRINTF Write formatted data to a string.
- % [S,ERRMSG] = SPRINTF(FORMAT,A,...) formats the data in matrix A
- % (and in any additional matrix arguments), under control of the
- % specified FORMAT 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 FPRINTF except that it returns the data in
- % a MATLAB string variable rather than writing it to a file.
- %
- % FORMAT 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
- % '%bx'.
- %
- % 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'
- %
- % See also FPRINTF, SSCANF, FWRITE, NUM2STR, INT2STR.
-
- % Copyright (c) 1984-93 by The MathWorks, Inc.
- % Built-in function.
-