log10 — Returns a base 10 log.


Returns the base 10 log of x (x positive only).

The argument value is restricted for log, log10, and sqrt.


log10(x) (no rate restriction)

where the argument within the parentheses may be an expression. Value converters perform arithmetic translation from units of one kind to units of another. The result can then be a term in a further expression.


Here is an example of the log10 opcode. It uses the file log10.csd.

Example 231. Example of the log10 opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

; Select audio/midi flags here according to platform
; Audio out   Audio in
-odac           -iadc    ;;;RT audio I/O
; For Non-realtime ouput leave only the line below:
; -o log10.wav -W ;;; for file output any platform

; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  i1 = log10(8)
  print i1


; Play Instrument #1 for one second.
i 1 0 1


Its output should include a line like this:

instr 1:  i1 = 0.903

See Also

abs, exp, frac, int, log, i, sqrt


Written by John ffitch.

New in version 3.47

Example written by Kevin Conder.