| x = any positive number. |
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Natural logarithm of x. This is the inverse of Exp( ).
y = Log( x ) means y satifies x = Exp( y ). The base of the natural logarithm is e = Exp(1) = 2.71828... See also Exp() |
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; Log example
; NaN means "Not a Number", the numerical result is invalid. ; NOTE: All logarithm functions are related. For example, there is no ; Log8 function in Blitz, but we can easily make one. HidePointer Print "Log8( -1 ) = " + Log8( -1 ) Print "Log8( 0 ) = " + Log8( 0 ) ; ... and now some well behaved numbers... x# = 1.0 / 4096.0 ; small positive number For n = 1 To 15 Print "Log8( " + LSet( x, 13 ) + " ) = " + Log8( x ) x = 8 * x Next WaitKey() : End Function Log8# ( x# ) Return Log( x ) / Log( 8 ) End Function |