mirror of
https://github.com/storytold/gridcraft.git
synced 2026-10-24 18:56:59 -06:00
Odd first and last coupon periods via quasi-coupon periods, from the formulas on Microsoft's public function pages. ODDLYIELD is closed form; ODDFYIELD bisects ODDFPRICE (bounded). Financial is now 55 / 55. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>