add Teensy

README.md

@@ -36,13 +36,14 @@
 |3.29|[pi.js](Node/pi.js)|Node|Intel i7-8700T|December, 2018|
 |3.12|[clusterpi.js](Node/clusterpi.js)|Node, 1 worker|Intel i7-8700T|December, 2018|
 |1.78|[threadpi.c](C/threadpi.c)|C, 4 threads<br>gcc threadpi.c -o threadpi -O3 -ffast-math -pthread|Raspberry Pi 4|December, 2020|
-|0.851|prior|Connection Machine CM-2|C, 32k processors|prior|
+|0.85|prior|Connection Machine CM-2|C, 32k processors|prior|
 |0.57|[pi.c](C/pi.c)|C<br>gcc pi.c -o pi -lm|Intel i7-8700T|November, 2018|
 |0.47|[numpi.py](Python/numpi.py)|Python, NumPy|Intel i7-8700T|November, 2018|
 |0.26|[multipi.cpp](https://gitlab.cba.mit.edu/zfredin/dice_firmware/-/blob/753157eb3624b1053ec95d1d3a042d4ba9b2c09a/src/pi/multipi.cpp)|C/C++|[Static DICE](http://cba.mit.edu/docs/papers/20.09.DICE.pdf) (16 SAMD51J20A DICE nodes)|August, 2020|
 |0.148|prior|IBM ES/9000|C|prior|
 |0.134|prior|Pentium III|C|prior|
 |0.118|prior|Cray Y-MP4/464|C, vector|prior|
+|0.093|[pi.ino](Arduino/pi.ino)|Arduino, floats|IMXRT1062<br>Teensy 4.1<br>600 MHz|August, 2021|
 |0.074|[pi.c](C/pi.c)|C<br>gcc pi.c -o pi -lm -O3 -ffast-math|Raspberry Pi Zero|December, 2020|
 |0.029|[pi.py](Python/pi.py)|Python|Intel i7-8700T|November, 2018|
 |0.0168|[pi.c](https://gitlab.cba.mit.edu/zfredin/samd51_benchmarks)|C<br>floats, -O3, gcc-arm-none-eabi, 160 MHz|SAMD51J20A<br>ARM Cortex M4F|October, 2019|