org.das2.math.fft.jnt.Factorize
Supplies static methods for factoring integers needed by various FFT classes.
Factorize( )
factor
factor( int n, int[] fromfactors ) → int[]
Return the prime factors of n.
The method first extracts any factors in fromfactors, in order (which
needn't actually be prime). Remaining factors in increasing order follow.
Parameters
n - an int
fromfactors - an int[]
Returns:
int[]
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log2
log2( int n ) → int
Return the integer log, base 2, of n, or -1 if n is not an integral power of 2.
Parameters
n - an int
Returns:
int
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