技術標籤：C語言學習c語言

電平補償增益需要計算 coef = 10^(db/20)。（gcc計算需要加-lm）
db的取值是[-1,1]

double pow(double dValue, double* dCoef )
{
double c = 0;
//c = pow(10,0.005);
dCoef  = c = 1.011579;
printf("[IFQ_GetFreqCompen]c   = %f\r\n", c   );

int i = 0;
if( dValue == 0 )	
{
  dCoef   = 1;
}

if( dValue > 0 )	
{
 dValue  =
 
 dValue *10;

	for(i =0 ; i <dValue ; i++)
	{
	  dCoef   = dCoef  * c; 
	}
	
	
}
if( dValue < 0 )	
{
  dValue = dValue * ( -10 );
  
	for(i =0 ; i <dValue ; i++)
	{
	    dCoef    =  dCoef   * c; 

	}		
dCoef   = 1/dCoef   ;
}

}