xfa/src/fgas/include/fx_alg.h

// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef _FX_ALGORITHM
#define _FX_ALGORITHM
#define FX_IsOdd(a)	((a) & 1)
#ifdef __cplusplus
extern "C" {
#endif
int32_t	FX_Base64EncodeA(const uint8_t* pSrc, int32_t iSrcLen, FX_CHAR* pDst);
int32_t	FX_Base64DecodeA(const FX_CHAR* pSrc, int32_t iSrcLen, uint8_t* pDst);
int32_t	FX_Base64DecodeW(const FX_WCHAR* pSrc, int32_t iSrcLen, uint8_t* pDst);
uint8_t		FX_Hex2Dec(uint8_t hexHigh, uint8_t hexLow);
int32_t	FX_SeparateStringW(const FX_WCHAR* pStr, int32_t iStrLen, FX_WCHAR delimiter, CFX_WideStringArray &pieces);
#ifdef __cplusplus
};
#endif
template<class baseType>
class CFX_DSPATemplate
{
public:
    int32_t Lookup(const baseType &find, const baseType *pArray, int32_t iCount)
    {
        FXSYS_assert(pArray != NULL);
        if (iCount < 1) {
            return -1;
        }
        int32_t iStart = 0, iEnd = iCount - 1, iMid;
        do {
            iMid = (iStart + iEnd) / 2;
            const baseType &v = pArray[iMid];
            if (find == v) {
                return iMid;
            } else if (find < v) {
                iEnd = iMid - 1;
            } else {
                iStart = iMid + 1;
            }
        } while (iStart <= iEnd);
        return -1;
    }
};
#endif