frac — Returns the fractional part of a decimal number.


Returns the fractional part of x.


frac(x) (init-rate or control-rate args; also works at audio rate in Csound5)

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 frac opcode. It uses the file frac.csd.

Example 312. Example of the frac 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 frac.wav -W ;;; for file output any platform

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

; Instrument #1.
instr 1
  i1 = 16 / 5
  i2 = frac(i1)

  print i2


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


Its output should include a line like this:

instr 1:  i2 = 0.200

See Also

abs, exp, int, log, log10, i, sqrt


Example written by Kevin Conder.