Reference

All functions
fsum()	Return an accurate floating point sum of values
kahanSum()	Using the Kahan method, take a more accurate sum
neumaierSum()	Using the Neumaier method, take a more accurate sum
pairwiseSum()	Return an accurate floating point sum of values
psProd()	Using PreciceSums's default method, take a product
psSetProd()	Choose the type of product to use in PreciceSums. These are used in the PreciceSums prod blocks
psSetSum()	Choose the type of sums to use for PreciceSums.
psSum()	Using PreciceSums's default method, take a sum