Andrew Chow 0fbaef9676 fees: Always round up fee calculated from a feerate ...

When calculating the fee for a given tx size from a fee rate, we should
always round up to the next satoshi. Otherwise, if we round down (via
truncation), the calculated fee may result in a fee with a feerate
slightly less than targeted.

This is particularly important for coin selection as a slightly lower
feerate than expected can result in a variety of issues.

2021-10-08 13:53:48 -04:00

4.2 KiB

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