/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2021 Mike Becker, 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 compare.h
* @brief A collection of simple compare functions.
* @author Mike Becker
* @author Olaf Wintermann
* @copyright 2-Clause BSD License
*/
#ifndef UCX_COMPARE_H
#define UCX_COMPARE_H
#include "common.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* A comparator function comparing two arbitrary values.
*
* All functions from compare.h with the cx_cmp prefix are
* compatible with this signature and can be used as
* compare function for collections or other implementations
* that need to be type-agnostic.
*
* For simple comparisons the cx_vcmp family of functions
* can be used, but they are NOT compatible with this function
* pointer.
*/
typedef int (*cx_compare_func)(const void *left, const void *right);
/**
* Compares two integers of type int.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to integer one
* @param i2 pointer to integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_int(const void *i1, const void *i2);
/**
* Compares two integers of type int.
*
* @param i1 integer one
* @param i2 integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_int(int i1, int i2);
/**
* Compares two integers of type long int.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to long integer one
* @param i2 pointer to long integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_longint(const void *i1, const void *i2);
/**
* Compares two integers of type long int.
*
* @param i1 long integer one
* @param i2 long integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_longint(long int i1, long int i2);
/**
* Compares two integers of type long long.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to long long one
* @param i2 pointer to long long two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_longlong(const void *i1, const void *i2);
/**
* Compares two integers of type long long.
*
* @param i1 long long int one
* @param i2 long long int two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_longlong(long long int i1, long long int i2);
/**
* Compares two integers of type int16_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to int16_t one
* @param i2 pointer to int16_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_int16(const void *i1, const void *i2);
/**
* Compares two integers of type int16_t.
*
* @param i1 int16_t one
* @param i2 int16_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_int16(int16_t i1, int16_t i2);
/**
* Compares two integers of type int32_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to int32_t one
* @param i2 pointer to int32_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_int32(const void *i1, const void *i2);
/**
* Compares two integers of type int32_t.
*
* @param i1 int32_t one
* @param i2 int32_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_int32(int32_t i1, int32_t i2);
/**
* Compares two integers of type int64_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to int64_t one
* @param i2 pointer to int64_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_int64(const void *i1, const void *i2);
/**
* Compares two integers of type int64_t.
*
* @param i1 int64_t one
* @param i2 int64_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_int64(int64_t i1, int64_t i2);
/**
* Compares two integers of type unsigned int.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to unsigned integer one
* @param i2 pointer to unsigned integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_uint(const void *i1, const void *i2);
/**
* Compares two integers of type unsigned int.
*
* @param i1 unsigned integer one
* @param i2 unsigned integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_uint(unsigned int i1, unsigned int i2);
/**
* Compares two integers of type unsigned long int.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to unsigned long integer one
* @param i2 pointer to unsigned long integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_ulongint(const void *i1, const void *i2);
/**
* Compares two integers of type unsigned long int.
*
* @param i1 unsigned long integer one
* @param i2 unsigned long integer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_ulongint(unsigned long int i1, unsigned long int i2);
/**
* Compares two integers of type unsigned long long.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to unsigned long long one
* @param i2 pointer to unsigned long long two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_ulonglong(const void *i1, const void *i2);
/**
* Compares two integers of type unsigned long long.
*
* @param i1 unsigned long long one
* @param i2 unsigned long long two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_ulonglong(unsigned long long int i1, unsigned long long int i2);
/**
* Compares two integers of type uint16_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to uint16_t one
* @param i2 pointer to uint16_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_uint16(const void *i1, const void *i2);
/**
* Compares two integers of type uint16_t.
*
* @param i1 uint16_t one
* @param i2 uint16_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_uint16(uint16_t i1, uint16_t i2);
/**
* Compares two integers of type uint32_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to uint32_t one
* @param i2 pointer to uint32_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_uint32(const void *i1, const void *i2);
/**
* Compares two integers of type uint32_t.
*
* @param i1 uint32_t one
* @param i2 uint32_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_uint32(uint32_t i1, uint32_t i2);
/**
* Compares two integers of type uint64_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to uint64_t one
* @param i2 pointer to uint64_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_uint64(const void *i1, const void *i2);
/**
* Compares two integers of type uint64_t.
*
* @param i1 uint64_t one
* @param i2 uint64_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_uint64(uint64_t i1, uint64_t i2);
/**
* Compares two integers of type size_t.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param i1 pointer to size_t one
* @param i2 pointer to size_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_size(const void *i1, const void *i2);
/**
* Compares two integers of type size_t.
*
* @param i1 size_t one
* @param i2 size_t two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_size(size_t i1, size_t i2);
/**
* Compares two real numbers of type float with precision 1e-6f.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param f1 pointer to float one
* @param f2 pointer to float two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_float(const void *f1, const void *f2);
/**
* Compares two real numbers of type float with precision 1e-6f.
*
* @param f1 float one
* @param f2 float two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_float(float f1, float f2);
/**
* Compares two real numbers of type double with precision 1e-14.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param d1 pointer to double one
* @param d2 pointer to double two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_double(const void *d1, const void *d2);
/**
* Compares two real numbers of type double with precision 1e-14.
*
* @param d1 double one
* @param d2 double two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_double(double d1, double d2);
/**
* Compares the integer representation of two pointers.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param ptr1 pointer to pointer one (const intptr_t*)
* @param ptr2 pointer to pointer two (const intptr_t*)
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_intptr(const void *ptr1, const void *ptr2);
/**
* Compares the integer representation of two pointers.
*
* @param ptr1 pointer one
* @param ptr2 pointer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_intptr(intptr_t ptr1, intptr_t ptr2);
/**
* Compares the unsigned integer representation of two pointers.
*
* @note the parameters deliberately have type @c void* to be
* compatible with #cx_compare_func without the need of a cast.
*
* @param ptr1 pointer to pointer one (const uintptr_t*)
* @param ptr2 pointer to pointer two (const uintptr_t*)
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_uintptr(const void *ptr1, const void *ptr2);
/**
* Compares the unsigned integer representation of two pointers.
*
* @param ptr1 pointer one
* @param ptr2 pointer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nodiscard
CX_EXPORT int cx_vcmp_uintptr(uintptr_t ptr1, uintptr_t ptr2);
/**
* Compares the pointers specified in the arguments without dereferencing.
*
* @param ptr1 pointer one
* @param ptr2 pointer two
* @retval -1 if the left argument is less than the right argument
* @retval 0 if both arguments are equal
* @retval 1 if the left argument is greater than the right argument
*/
cx_attr_nonnull cx_attr_nodiscard
CX_EXPORT int cx_cmp_ptr(const void *ptr1, const void *ptr2);
#ifdef __cplusplus
} // extern "C"
#endif
#endif //UCX_COMPARE_H