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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. 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.
 *
 * 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 HOLDER 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.
 */

/**
 * @file utils.h
 * 
 * Common utilities like compare and copy functions.
 * 
 * @author Mike Becker
 * @author Olaf Wintermann
 */

#ifndef UCX_UTILS_H
#define	UCX_UTILS_H

#ifdef	__cplusplus
extern "C" {
#endif

#include "ucx.h"
#include <string.h>

/**
 * Copies a string.
 * @param s the string to copy
 * @param data omitted
 * @return a pointer to a copy of s1 that can be passed to free(void*)
 */
void *ucx_strcpy(void *s, void *data);

/**
 * Copies a memory area.
 * @param m a pointer to the memory area
 * @param n a pointer to the size_t containing the size of the memory area
 * @return a pointer to a copy of the specified memory area that can
 * be passed to free(void*)
 */
void *ucx_memcpy(void *m, void *n);

/**
 * Wraps the strcmp function.
 * @param s1 string one
 * @param s2 string two
 * @param data omitted
 * @return the result of strcmp(s1, s2)
 */
int ucx_strcmp(void *s1, void *s2, void *data);

/**
 * Wraps the strncmp function.
 * @param s1 string one
 * @param s2 string two
 * @param n a pointer to the size_t containing the third strncmp parameter
 * @return the result of strncmp(s1, s2, *n)
 */
int ucx_strncmp(void *s1, void *s2, void *n);

/**
 * Compares two integers of type int.
 * @param i1 pointer to integer one
 * @param i2 pointer to integer two
 * @param data omitted
 * @return -1, if *i1 is less than *i2, 0 if both are equal,
 * 1 if *i1 is greater than *i2
 */

int ucx_intcmp(void *i1, void *i2, void *data);

/**
 * Compares two real numbers of type float.
 * @param f1 pointer to float one
 * @param f2 pointer to float two
 * @param if provided: a pointer to precision (default: 1e-6f)
 * @return -1, if *f1 is less than *f2, 0 if both are equal,
 * 1 if *f1 is greater than *f2
 */

int ucx_floatcmp(void *f1, void *f2, void *data);

/**
 * Compares two real numbers of type double.
 * @param f1 pointer to double one
 * @param f2 pointer to double two
* @param if provided: a pointer to precision (default: 1e-14)
 * @return -1, if *d1 is less than *d2, 0 if both are equal,
 * 1 if *d1 is greater than *d2
 */

int ucx_doublecmp(void *d1, void *d2, void *data);

/**
 * Compares two pointers.
 * @param ptr1 pointer one
 * @param ptr2 pointer two
 * @param data omitted
 * @return -1 if ptr1 is less than ptr2, 0 if both are equal,
 * 1 if ptr1 is greater than ptr2
 */
int ucx_ptrcmp(void *ptr1, void *ptr2, void *data);

/**
 * Compares two memory areas.
 * @param ptr1 pointer one
 * @param ptr2 pointer two
 * @param n a pointer to the size_t containing the third parameter for memcmp
 * @return the result of memcmp(ptr1, ptr2, *n)
 */
int ucx_memcmp(void *ptr1, void *ptr2, void *n);

#ifdef	__cplusplus
}
#endif

#endif	/* UCX_UTILS_H */