29 lines
513 B
C
29 lines
513 B
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)vprintf.c 1.1 92/07/30 SMI"; /* from S5R2 1.1 */
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#endif
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/*LINTLIBRARY*/
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#include <stdio.h>
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#include <varargs.h>
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extern int _doprnt();
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/*VARARGS1*/
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int
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vprintf(format, ap)
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char *format;
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va_list ap;
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{
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if (!(stdout->_flag & _IOWRT)) {
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/* if no write flag */
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if (stdout->_flag & _IORW) {
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/* if ok, cause read-write */
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stdout->_flag |= _IOWRT;
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} else {
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/* else error */
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return EOF;
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}
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}
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return(_doprnt(format, ap, stdout));
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}
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