Questions tagged [mixed-radix]

6 questions
9
votes
5 answers

Converting a decimal to a mixed-radix (base) number

How do you convert a decimal number to mixed radix notation? I guess that given an input of an array of each of the bases, and the decimal number, it should output an array of the values of each column.
nickf
  • 537,072
  • 198
  • 649
  • 721
3
votes
1 answer

Equivalent of encode / decode from APL in Python

I'm curious if anyone recalls the decode (⊥) function in APL? It was useful to translate between dimensions in an n-dimensional array and a flattened equivalent. For example, if I had a 4 dimensional array, I could use decode as follows to derive…
C. Cooney
  • 471
  • 5
  • 19
3
votes
1 answer

How to Convert from a Residual Number System to a Mixed Radix System?

I understand the concept of a Residual Number System and the concept of a Mixed Radix system, but I'm having difficulty getting any of the conversion methods I find to work in a simple case study. I started at Knuth's Art of Computer Programming but…
eyepatch
  • 85
  • 6
1
vote
1 answer

Radix 3,5 FFT in C++

I'm trying to implement A Radix-5,Radix-3 FFT in C++, I already managed to write a Radix-2 but I have some type of bug when it comes to Radix 3 or 5, let's say I do an FFT of 3 samples, that would show the correct results, however if I do FFT of 9…
yarin Cohen
  • 995
  • 1
  • 13
  • 39
1
vote
1 answer

Radix number representation

I have recently started learning Logic Designs and I have a few things that I don't quite understand. Let's say you are given a certain value in seconds (say 3,000,000), and are asked to convert to weeks, days, hours, minutes and seconds (Mixed…
Vik
  • 37
  • 5
1
vote
2 answers

How to calculate log of a complex number to a base other than 'e'?

I have this bit of VB6 sliced out of a project I'm working on: Public Function C_Ln(c As ComplexNumber) As ComplexNumber Set C_Ln = toComplex(Log(C_Abs(c)), Atan2(c.Imag, c.Real)) End Function The VB6 Log() function is base-e. I'd like to cook…
bugmagnet
  • 7,631
  • 8
  • 69
  • 131