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