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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
# ASQR -- Compute the square root of a vector (generic). If the square root
# is undefined (x < 0) a user supplied function is called to compute the value.
procedure asqrd (a, b, npix, errfcn)
double a[ARB], b[ARB]
int npix, i
extern errfcn()
double errfcn()
errchk errfcn
begin
do i = 1, npix {
if (a[i] < 0)
b[i] = errfcn (a[i])
else
{
b[i] = sqrt (a[i])
}
}
end
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