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- /*
- \funcref{getopcode}{OPCODE\_ getopcode (\params)}
- {
- {FILE} {*f} {binary {\em icmake} file}
- }
- {read opcode, or --1 when reading failed}
- {}
- {getstring()}
- {getopcod.c}
- {
- Function {\em getopcode()} attempts to read an opcode from file {\em
- f}. This file must be opened in read/binary mode (see the constant {\em
- READBINARY} in file {\em icm.h}).
-
- When the reading operation fails, --1 is returned.
- }
-
- Example:
- {\footnotesize
- \begin{verbatim}
- // file 'infile' is assumed to be opened
- OPCODE_
- op;
-
- if ( (op = getopcode (f)) == -1 )
- error ("invalid binary makefile");
- process (op);
- \end{verbatim}
- } % end footnotesize
- */
-
- #include "icrssdef.h"
-
- OPCODE_ getopcode (FILE *f)
- {
- char
- op = 0;
-
- if (! fread (&op, sizeof (char), 1, f) )
- op = (char) -1;
-
- return ( (OPCODE_) op );
- }
-