tIlo = tIlo-tiStride*(eWdth-1)
tIhi = tIhi+tiStride*(eWdth-1)
tJhi = tJhi+eWdth-1
I fCode, eWdth, updateCorners,
INTEGER eWdth
tIlo = 1-eWdth
tJlo = tJlo-tjStride*(eWdth-1)
tJhi = tJhi+tjStride*(eWdth-1)
tIhi = tIhi+eWdth-1
tJlo = 1-eWdth
tIhi1 = tIhi+eWdth-1
tJlo1 = tJlo-tjStride*(eWdth-1)
tJhi1 = tJhi+tjStride*(eWdth-1)
tJlo1 = 1-eWdth
tIlo1 = tIlo-tiStride*(eWdth-1)
tIhi1 = tIhi+tiStride*(eWdth-1)
tJhi1 = tJhi+eWdth-1
tIlo1 = 1-eWdth