Whether a raw SVI tuple's minimum total variance a + b * sigma * sqrt(1 - rho^2) is positive, compared rather than summed: a reaches u64::MAX, where the sum would leave u64.
a + b * sigma * sqrt(1 - rho^2)
a
u64::MAX
u64
Whether a raw SVI tuple's minimum total variance
a + b * sigma * sqrt(1 - rho^2)is positive, compared rather than summed:areachesu64::MAX, where the sum would leaveu64.