AVVTetraParamConv.h

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//---------------------------------------
// utility routines

#define _USE_MATH_DEFINES
#include <math.h>

#define ln10 (2.302585092994)

float inline db2level(float db)
{
    return  (float)exp(ln10 * ((double)db / 20.0));
}

float inline level2db(float level)
{
    return (float)(20.0f * log((double)level) / ln10);
}

float inline degree360Convert (float value)
{
     return (360.0f * value);
}

float inline degreePM180Convert (float value)
{
     return (360.0f * (value - 0.5f));
}

float inline zeroTwoConvert (float value)
{
     return (2.0f * value);
}

int inline oneMAXCAPConvert (float value)
{
     return (int)(((MAXCAP - 1) * value)) + 1;
}

int inline oneMAXFILTERConvert (float value)
{
     return (int)(((MAXFILTER - 1) * value));
}

float inline filter2parm (int value)
{
    return ((float)value) / (MAXFILTER - 1);
}

int inline oneMAXVIEWConvert (float value)
{
     return (int)(((MAXVIEW - 1) * value)) + 1;
}

float inline view2parm (int value)
{
    return ((float)value - 1) / (MAXVIEW - 1);
}

float  oneMAXFREQConvert (float value)
{
    return (float)(MINFREQ * exp(ln10 * value / FREQRATIO));
    //return (float)(floor((MAXFREQ - 1) * value)) + 1;
}

float inline freq2parm(float value)
{
    return (float)(log(value / MINFREQ) * FREQRATIO / ln10);
}

float inline oneLOWFREQConvert (float value)
{
    return (float)(MINFREQ * exp(ln10 * value / LOWRATIO));
    //return (float)(floor((MAXFREQ - 1) * value)) + 1;
}

float inline lowfreq2parm(float value)
{
    return (float)(log(value / MINFREQ) * LOWRATIO / ln10);
}

bool inline parm2bool(float x)
{
    return (x > .5);
}

float inline parm2halfpi (float x)
{
    return (float)((M_PI * x) - (M_PI_2));
}

float inline parm2pi (float x)
{
    return (float)((2 * M_PI * x) - M_PI_2);
}

float inline parm2PlusMinus12 (float x)
{
    return (24.0f * x) - 12.0f;
}

float inline plusMinus122parm (float x)
{
    return (x + 12) / 24;
}

float inline parm2PlusMinus15 (float x)
{
    return (30 * x) - 15.0f;
}

float inline plusMinus152parm (float x)
{
    return (x + 15) / 30;
}

float  parm2width (float x)
{
    return 5 * x;
}

float  width2parm (float x)
{
    return x / 5;
}