Arduino v Teensy float and double

[ktorimaru]

I was just reading that on Arduino a float and a double are the same
and that precision is limited to 6 to 7 total digits.

What are the stats for Teensy 3.1?

 

[PaulStoffregen]

On Teensy 3.1, float is 32 bits and double is 64 bits.

 

[gberl001]

Just to provide a little extra info so not to confuse someone reading this, not all Arduinos have 32 bit double and floats, the Arduino Due uses an ARM core processor which has 64 bit doubles. Currently all of the Atmel based Arduinos have matched double and float precisions of 32 bits.