swh:1:snp:63e2d142f91fc04ec33789d9d7bb85f3bef72e05
Tip revision: 66d8e606a8d996ded60bc81d5edf319142a5fad9 authored by Ron Burkey on 04 October 2021, 11:49:55 UTC
Merge branch 'master' of https://github.com/virtualagc/virtualagc
Merge branch 'master' of https://github.com/virtualagc/virtualagc
Tip revision: 66d8e60
SINGLE_PRECISION_SUBROUTINES.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: SINGLE_PRECISION_SUBROUTINES.agc
## Purpose: A section of the reconstructed source code for Luminary 130.
## This was the original program released for the Apollo 13 LM,
## although several more revisions would follow. It has been
## reconstructed from a listing of Luminary 131, from which it
## differs on only two lines in P70-P71. The difference is
## described in detail in Luminary memo #129, which was used
## to perform the reconstruction. This file is intended to be a
## faithful reconstruction, except that the code format has been
## changed to conform to the requirements of the yaYUL assembler
## rather than the original YUL assembler.
## Reference: p. 1096
## Contact: Ron Burkey <info@sandroid.org>.
## Website: www.ibiblio.org/apollo/index.html
## Mod history: 05/31/03 RSB. Began transcribing.
## 05/14/05 RSB Corrected website references above.
## 2017-01-06 RSB Page numbers now agree with those on the
## original harcopy, as opposed to the PDF page
## numbers in 1701.pdf.
## 2017-02-27 RSB Proofed comment text using octopus/ProoferComments.
## 2018-09-04 MAS Copied from Luminary 131 for Luminary 130.
## Page 1096
BLOCK 02
# SINGLE PRECISION SINE AND COSINE
COUNT* $$/INTER
SPCOS AD HALF # ARGUMENTS SCALED AT PI
SPSIN TS TEMK
TCF SPT
CS TEMK
SPT DOUBLE
TS TEMK
TCF POLLEY
XCH TEMK
INDEX TEMK
AD LIMITS
COM
AD TEMK
TS TEMK
TCF POLLEY
TCF ARG90
POLLEY EXTEND
MP TEMK
TS SQ
EXTEND
MP C5/2
AD C3/2
EXTEND
MP SQ
AD C1/2
EXTEND
MP TEMK
DDOUBL
TS TEMK
TC Q
ARG90 INDEX A
CS LIMITS
TC Q # RESULT SCALED AT 1