### FILE="Main.annotation"
## Copyright:	Public domain.
## Filename:	SINGLE_PRECISION_SUBROUTINES.agc
## Purpose:	Part of the source code for Artemis (i.e., Colossus 3),
##		build 072.  This is for the Command Module's (CM)
##		Apollo Guidance Computer (AGC), for
##		Apollo 15-17.
## Assembler:	yaYUL
## Contact:	Jim Lawton <jim DOT lawton AT gmail DOT com>
## Website:	www.ibiblio.org/apollo/index.html
## Page Scans:	www.ibiblio.org/apollo/ScansForConversion/Artemis072/
## Mod history:	2009-08-22 JL	Adapted from corresponding Comanche 055 file.
##		2010-02-20 RSB	Un-##'d this header.
##		2017-02-08 RSB	Proofed comment text by diff'ing vs Comanche 55
##				and/or octopus/ProoferComments as most-appropriate.

## Page 1207
		SETLOC	FFTAG1
		BANK

# 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
		
# SPROOT WAS DELETED IN REV 51 OF MASTER. ASS. CONT. HAS CARDS.