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#include "stddef.h" // for NULL
#include <errno.h> // for EINVAL, errno
#include <libc.h> // for __IMPL
#include <stdio.h> // for EOF, fwrite, FILE, fputc
int fputc(int c, FILE *stream)
{
if (stream == NULL) {
errno = EINVAL;
return EOF;
}
if (__IMPL(stream)->fd == -1 && __IMPL(stream)->buf != NULL) {
if (__IMPL(stream)->buf_len >= __IMPL(stream)->buf_size - 1) {
return EOF;
}
__IMPL(stream)->buf[__IMPL(stream)->buf_len++] = (char)c;
return (unsigned char)c;
}
return fwrite(&c, 1, 1, stream) ? c : EOF;
}
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