Description

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

Syntax

ares taninv2 ay, ax

ires taninv2 iy, ix

kres taninv2 ky, kx

...taninv2(ky, kx)... (no rate restriction)

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 file taninv2.csd.

<CsoundSynthesizer>
<CsOptions>
; 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 taninv2.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

; 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


</CsInstruments>
<CsScore>

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


</CsScore>
</CsoundSynthesizer>

Its output should include a line like this:

instr 1:  i1 = 0.464

See Also

taninv

Credits

Example written by Kevin Conder.

New in Csound version 3.48

Corrected on May 2002, thanks to Istvan Varga.

Available as a function in version 6.00