calwork <-
function(a,b,ai,bi,ab,eps)
{
if (abs(a-b) < 2.0*eps)
{
if (ai+bi==ab)
{
cwork=0
}
else
{
if (ai+bi<ab)
{
cwork=1
}
else
{
cwork=0-1
}
}
}
else
{
cwork=(a+b)/(a-b)
}
cwork
}
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