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【BjerkStensPhi】
- inputs:
- AssetPr( numericsimple ),
- YearsLeft( numericsimple ),
- MyGamma( numericsimple ),
- MyH( numericsimple ),
- TriggerPr( numericsimple ),
- Rate( numericsimple ),
- Carry( numericsimple ),
- Volty( numericsimple ) ;
- variables:
- var0( 0 ),
- var1( 0 ),
- var2( 0 ),
- var3( 0 ),
- var4( 0 ),
- var5( 0 ) ;
-
- var0 = Square( Volty ) ;
- var1 = SquareRoot( YearsLeft ) ;
- var2 = ( -Rate + MyGamma * Carry + .5 * MyGamma * ( MyGamma - 1 ) * var0 ) * YearsLeft ;
- var3 = -( Log( AssetPr / MyH ) + ( Carry + ( MyGamma - .5 ) * var0 ) * YearsLeft ) / ( Volty * var1 ) ;
- var4 = 2 * Carry / var0 + 2 * MyGamma - 1 ;
- var5 = var3 - 2 * Log( TriggerPr / AssetPr ) / ( Volty * var1 ) ;
- BjerkStensPhi = ExpValue( var2 ) * Power( AssetPr, MyGamma ) * ( NormSCDensity( var3 ) - Power( TriggerPr / AssetPr, var4 ) * NormSCDensity( var5 ) ) ;
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