/*
 * Copyright (C) 2018 Intel Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Intel Corporation nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef PRINTF_H
#define PRINTF_H

#ifdef HV_DEBUG
/** The well known printf() function.
 *
 *  Formats a string and writes it to the console output.
 *
 *  @param fmt A pointer to the NUL terminated format string.
 *
 *  @return The number of characters actually written or a negative
 *          number if an error occurred.
 */

int printf(const char *fmt, ...);

/** The well known vprintf() function.
 *
 *  Formats a string and writes it to the console output.
 *
 *  @param fmt A pointer to the NUL terminated format string.
 *  @param args The variable long argument list as va_list.
 *  @return The number of characters actually written or a negative
 *          number if an error occurred.
 */

int vprintf(const char *fmt, va_list args);

#else /* HV_DEBUG */

static inline int printf(__unused const char *fmt, ...)
{
	return 0;
}

static inline int vprintf(__unused const char *fmt, __unused va_list args)
{
	return 0;
}

#endif /* HV_DEBUG */

#endif /* PRINTF_H */