Floating point types

IEEE Standard for Floating-Point Arithmetic

64-bit computer number format

32-bit computer number format

128-bit computer number format

In computing, minifloats are floating-point values represented with very few bits. This reduced precision makes them ill-suited for general-purpose numerical calculations, but they are useful for special purposes such as: Computer graphics, where human perception of color and light levels has low precision. The 16-bit half-precision format is very popular. Machine learning, which can be relatively insensitive to numeric precision. 16-bit, 8-bit, and even 4-bit floats are increasingly being used.

any floating point number format that provides greater precision than 64-bit double