pow

pow --  Computes one argument to the power of another argument.

Description

Computes xarg to the power of kpow (or ipow) and scales the result by inorm.

Syntax

ar pow aarg, kpow [, inorm]

ir pow iarg, ipow

kr pow karg, kpow [, inorm]

Initialization

iarg -- i-rate base.

ipow -- i-rate exponent

inorm (optional, default=1) -- The number to divide the result (default to 1). This is especially useful if you are doing powers of a- or k- signals where samples out of range are extremely common!

Performance

karg -- k-rate base.

kpow -- k-rate exponent

aarg -- a-rate base.

Note

Use ^ with caution in arithmetical statements, as the precedence may not be correct. New in Csound version 3.493.

Examples

Here is an example of the pow opcode. It uses the files pow.orc and pow.sco.

Example 1. Example of the pow opcode.

/* pow.orc */
/* Written by Kevin Conder */
; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  ; This could also be expressed as: i1 = 2 ^ 12
  i1 pow 2, 12

  print i1
endin
/* pow.orc */
        
/* pow.sco */
/* Written by Kevin Conder */
; Play Instrument #1 for one second.
i 1 0 1
e
/* pow.sco */
        
Its output should include a line like this:
instr 1:  i1 = 4096.000
      

Credits

Author: Paris Smaragdis

MIT, Cambridge

1995