/usr/lib/x86_64-linux-gnu/fis-gtm/V6.3-000A_x86_64/_SQROOT.m is in fis-gtm-6.3-000a 6.3-000A-1.
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; Copyright 1988,2001 Sanchez Computer Associates, Inc. ;
; ;
; This source code contains the intellectual property ;
; of its copyright holder(s), and is made available ;
; under a license. If you do not know the terms of ;
; the license, please stop and do not read further. ;
; ;
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%SQROOT ;GT.M %SQROOT utility - square root function
;invoke at INT for interactive output to current device
;invoke ^%SQROOT with %X to return the square root %Y
;invoke at FUNC as an extrinsic function
;
s %Y=$$FUNC($g(%X))
q
INT n %X,%Y
f r !,"The square root of: ",%X q:+%X'=%X w ?35," is: ",$$FUNC(%X),!
q
FUNC(x)
q:+x=0 0
n i s i="" s:x<0 x=-x,i="i"
q i_(x**.5)
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