TrigonometricFunction > CORDIC https://en.wikipedia.org/wiki/CORDIC https://dspguru.com/dsp/faqs/cordic/ .† 10/02/24 関数電卓のしくみ(CORDICアルゴルズム) https://teamcoil.sp.u-tokai.ac.jp/calculators/column/100224/index.html T he Difference Between x87 Instructions FSIN, FCOS, FSINCOS, and FPTAN and Mathematical Functions sin, cos, sincos, and tan https://www.intel.com/content/dam/develop/external/us/en/documents/x87trigonometricinstructionsvsmathfunctions.pdf CORDIC アルゴリズム https://qiita.com/s059ff/items/d84004dc9041c217c2e8 Link: TrigonometricFunction