///////////////////////////////////////////////////////////////////////////
// NAME: utility.h
// FUNCTION: Headfile for utility functions
// DESCRIPTION: Headfile for program utility.cpp
// REFERENCE: none
// CALLING SEQUENCE: none
// INPUTS: none
// OUTPUTS: none
// DEPENDENCIES: none
// RESTRICTIONS: none
// HISTORY: none
//////////////////////////////////////////////////////////////////////////
#ifndef _UTILITY_H_
#define _UTILITY_H_
#include "mfhdf.h"
#include <cstdlib>

using namespace std;


#define STRMAX 256

/* interpolation helper functions */
void locate(float32 x, float32 xt[], int32 nxt, int32& i1, int32& i2,
   float32& frac);

void replaceAll(char *pString, char originChar, char newchar);

uint8 Set_QualityFlag_bit(uint8 Flag, uint8 Bit_No);

float32 SunGlintAng(float32 SOLZA, float32 SENZA, float32 SOLAZ, float32 SENAZ);
float32 ConfidenceLevel_U(float32 test, float32 Threshold);
float32 ConfidenceLevel_L(float32 test, float32 Threshold);
float32 ConfidenceLevel_M(float32 test, float32 Threshold1, float32 Threshold2);
/*************************************/
/*** Rayleigh Scattering Functions ***/
/*************************************/


/**
* This function calculate the molecular reflectance for a given
* molecular optical thickness, geometry and ABI channel.
*
* @param MolOD     Molecular optical thickness
* @param CosSza  Cosine of solar zenith angle
* @param CosVza  Cosine of viewing zenith angle
* @param RelAzi  Relative azimuth angle
* @param Chn     ABI channel index
*
* @return Rayleigh reflectance
*/
float32 RayRefl(float32 MolOD, float32 CosSza, float32 CosVza,
                float32 RelAzi, int32 Chn);
int findFile(const char *pattern, char *filename1);


#endif /*_UTILITY_H_*/