1
0
mirror of https://github.com/cc65/cc65.git synced 2024-12-27 00:29:31 +00:00
cc65/libsrc/common/fputc.c

35 lines
533 B
C
Raw Normal View History

/*
* fputc.c
*
* Ullrich von Bassewitz, 02.06.1998
*/
#include <stdio.h>
#include <fcntl.h>
#include "_file.h"
int fputc (int c, FILE* f)
{
/* Check if the file is open or if there is an error condition */
if ((f->f_flags & _FOPEN) == 0 || (f->f_flags & (_FERROR | _FEOF)) != 0) {
return EOF;
}
/* Write the byte (knows about byte order!) */
if (write (f->f_fd, &c, 1) <= 0) {
/* Error */
f->f_flags |= _FERROR;
return EOF;
}
/* Return the byte written */
return c & 0xFF;
}