taninv2

taninv2 --  Returns an arctangent.

Description

Returns the arctangent of iy/ix, ky/kx, or ay/ax.

Syntax

ar taninv2 ay, ax

ir taninv2 iy, ix

kr taninv2 ky, kx

Returns the arctangent of iy/ix, ky/kx, or ay/ax. If y is zero, taninv2 returns zero regardless of the value of x. If x is zero, the return value is:

Initialization

iy, ix -- values to be converted

Performance

ky, kx -- control rate signals to be converted

ay, ax -- audio rate signals to be converted

Examples

Here is an example of the taninv2 opcode. It uses the files taninv2.orc and taninv2.sco.

Example 1. Example of the taninv2 opcode.

/* taninv2.orc */
/* Written by Kevin Conder */
; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  ; Returns the arctangent for 1/2.
  i1 taninv2 1, 2

  print i1
endin
/* taninv2.orc */
        
/* taninv2.sco */
/* Written by Kevin Conder */
; Play Instrument #1 for one second.
i 1 0 1
e
/* taninv2.sco */
        
Its output should include a line like this:
instr 1:  i1 = 0.464
      

See Also

taninv

Credits

Author: John ffitch
University of Bath/Codemist Ltd.
Bath, UK
April 1998

New in Csound version 3.48

Corrected on May 2002, thanks to Istvan Varga.