mirror of
https://github.com/SEPPDROID/Digital-Research-Source-Code.git
synced 2025-10-23 16:34:07 +00:00
52 lines
2.1 KiB
ArmAsm
52 lines
2.1 KiB
ArmAsm
ttl arctangent cordic table - ffptheta
|
|
ffptheta idnt 1,1 ffp arctangent table
|
|
***************************************
|
|
* (c) copyright 1981 by motorola inc. *
|
|
***************************************
|
|
|
|
section 9
|
|
|
|
xdef ffptheta external definition
|
|
|
|
*********************************************************
|
|
* arctangent table for cordic *
|
|
* *
|
|
* the following table is used during cordic *
|
|
* transcendental evaluations for sine, cosine, and *
|
|
* tangent and represents arctangent values 2**-n where *
|
|
* n ranges from 0 to 24. the format is binary(31,29) *
|
|
* precision (i.e. the binary point is between bits *
|
|
* 28 and 27 giving two leading non-fraction bits.) *
|
|
*********************************************************
|
|
|
|
ffptheta dc.l $1921fb54 $c90fdaa2>>3 arctan(2**0)
|
|
dc.l $76b19c15>>3 arctan(2**-1)
|
|
dc.l $3eb6ebf2>>3 arctan(2**-2)
|
|
dc.l $1fd5ba9a>>3 arctan(2**-3)
|
|
dc.l $0ffaaddb>>3 arctan(2**-4)
|
|
dc.l $07ff556e>>3 arctan(2**-5)
|
|
dc.l $03ffeaab>>3 arctan(2**-6)
|
|
dc.l $01fffd55>>3 arctan(2**-7)
|
|
dc.l $00ffffaa>>3 arctan(2**-8)
|
|
dc.l $007ffff5>>3 arctan(2**-9)
|
|
dc.l $003ffffe>>3 arctan(2**-10)
|
|
dc.l $001fffff>>3 arctan(2**-11)
|
|
dc.l $000fffff>>3 arctan(2**-12)
|
|
dc.l $0007ffff>>3 arctan(2**-13)
|
|
dc.l $0003ffff>>3 arctan(2**-14)
|
|
dc.l $0001ffff>>3 arctan(2**-15)
|
|
dc.l $0000ffff>>3 arctan(2**-16)
|
|
dc.l $00007fff>>3 arctan(2**-17)
|
|
dc.l $00003fff>>3 arctan(2**-18)
|
|
dc.l $00001fff>>3 arctan(2**-19)
|
|
dc.l $00000fff>>3 arctan(2**-20)
|
|
dc.l $000007ff>>3 arctan(2**-21)
|
|
dc.l $000003ff>>3 arctan(2**-22)
|
|
dc.l $000001ff>>3 arctan(2**-23)
|
|
dc.l $000000ff>>3 arctan(2**-24)
|
|
dc.l $0000007f>>3 arctan(2**-25)
|
|
dc.l $0000003f>>3 arctan(2**-26)
|
|
|
|
end
|
|
|