libc.info: iprintf

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`iprintf'--write formatted output (integer only)

*Synopsis*
     #include <stdio.h>
     int iprintf(const char *FORMAT, ...);
   *Description*
`iprintf' is a restricted version of `printf': it has the same
arguments and behavior, save that it cannot perform any floating-point
formatting: the `f', `g', `G', `e', and `F' type specifiers are not
recognized.
*Returns*
`iprintf' returns the number of bytes in the output string, save that
the concluding `NULL' is not counted.  `iprintf' returns when the end
of the format string is encountered.  If an error occurs, `iprintf'
returns `EOF'.
*Portability*
`iprintf' is not required by ANSI C.
   Supporting OS subroutines required: `close', `fstat', `isatty',
`lseek', `read', `sbrk', `write'.