/*

 Copyright (C) 2015-2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Numerics utilities for fast-float comparison and swapping integer values.

 */

#ifndef _CORE_MATH_NUMERICS_H_

#define _CORE_MATH_NUMERICS_H_

#import <cstdlib>

#ifdef __cplusplus

namespace CM

{

    // Single and double precision comparisons

    bool isEQ(float&  x, float&  y, const int32_t& max = 1);

    bool isEQ(double& x, double& y, const int64_t& max = 1);

    bool isLT(float&  x, float&  y);

    bool isLT(double& x, double& y);

    bool isZero(float&  x, float&  eps);

    bool isZero(double& x, double& eps);

    // Storsge-free swap

    void swap(long&   x, long&   y);

    void swap(size_t& x, size_t& y);

    void swap(int8_t&  x, int8_t&  y);

    void swap(int16_t& x, int16_t& y);

    void swap(int32_t& x, int32_t& y);

    void swap(int64_t& x, int64_t& y);

    void swap(uint8_t&  x, uint8_t&  y);

    void swap(uint16_t& x, uint16_t& y);

    void swap(uint32_t& x, uint32_t& y);

    void swap(uint64_t& x, uint64_t& y);

} // CM

#endif

#endif