Sgutil

SGLIB/SGUTIL package contains Dave Haddle's noise reduction software with segment finding extensions. It resides in $CODA/src/codatt/sgutil.c and is called from $CLON/src/cmon/prlib/sglib.c.

SGLIB contains following functions:

• sginit() - must be called once at initialization stage; creates differencial shift table and fills lookup tables

• sgtrigger() - works for specified sector; return 0 if sector does not have required track information, otherwise returns the number of superlayers with segments; calls function RemoveNoise() from SGUTIL

• sgremovenoise() - works for specified sector; rewrites all DC banks removing single hits; calls function RemoveNoise() from SGUTIL

• sglib() - find segments for one sector; three options can be specified: noise removing only, segment finding only, noise removing and then segment finding; calls functions RemoveNoise(), SegmentSearch128() and SegmentSearch192() from SGUTIL

• sgprint() - print results for one sector

• sgroad() - fill road finding structures, SWAPING region 1

SGUTIL contains following functions:

• BinaryPrint32(), PrintWord192(), CopyWord192(), ANDWord192(), ORWord192(), XORWord192(), CheckBitWord192(), SetBitWord192(), ClearWord192(), NegateWord192(), BleedRightWord192(), BleedLeftWord192() - 192-bit words operations; there are some macroses as well for special cases and to speedup come calculations