2-Jul-96, 6:54:35
Routine Save for Complex Mathematics Library function $%CCOS^MATH
 ;
 ; Unless otherwise noted, the code below
 ; was approved in document X11/95-14
 ;
 ; If corrections have been applied,
 ; first the original line appears,
 ; with three semicolons at the beginning of the line.
 ;
 ; Then the source of the correction is acknowledged,
 ; then the corrected line appears, followed by a
 ; line containing three semicolons.
 ;
CCOS(Z,PREC) ;
 New E1,E2,IA
 ;
 ;;;
 ; Alan Frank (October 1995)
 Set PREC=$Get(PREC,11)
 ;;;
 ;
 Set IA=$%CMUL^MATH(Z,"0%1")
 Set E1=$%CEXP^MATH(IA,PREC)
 Set IA=-IA_"%"_(-$Piece(IA,"%",2))
 Set E2=$%CEXP^MATH(IA,PREC)
 Set IA=$%CADD^MATH(E1,E2)
 Quit $%CMUL^MATH(IA,"0.5%0")
 ;===
 ;
 ;
 ;