Basic / Arithmetic Types

• Bool
  • not bool nor Boolean
• Int == Int64
  • As in Swift and Go.
  • Int == Int32 on 32 bit systems only (i.e. old/small platforms),
    • Int == Int16 on 8 and 16 bit systems (i.e. very old/small microcontrollers with 16 bit addresses, like AVR / Atmel ATmega328 / Arduino Uno, or old home computers with 6502, Z80).
  • Int8, Int16, Int32, Int64
  • UInt, UInt8, UInt16, UInt32, UInt64
  • Simply use Int,
    • not Size, SSize, nor PtrDiff,
    • not Long nor LongLong.
• Byte == std::byte (i.e. not the same type as UInt8 for parameter overloading)
• Float
  • Float == Float64, i.e. double precision is “standard”
    • Like Python. Unlike C/C++, where float is single precision.
    • With modern processors double precision is very fast.
      • “Every language is a child of its time”
      • When concerned with memory bandwith, cache size, and SIMD performance, choose one of the smaller floating-point types.
        But then BFloat16, Float8, or even Float4 maybe better than Float32.
    • Float == Float32 on old/small platforms only (i.e. those with hardware support for Float32 but not for Float64),
  • Float16, Float32, Float64 (half, single, double precision floating point)