|Signed integer types
|Signed integer types|
|data Int |
|A fixed-precision integer type with at least the range [-2^29
.. 2^29-1]. The exact range for a given implementation can be
determined by using minBound and maxBound from the Bounded
|data Int8 |
|8-bit signed integer type|
|data Int16 |
|16-bit signed integer type|
|data Int32 |
|32-bit signed integer type|
|data Int64 |
|64-bit signed integer type|
- All arithmetic is performed modulo 2^n, where n is the number of
bits in the type.
- For coercing between any two integer types, use fromIntegral,
which is specialized for all the common cases so should be fast
enough. Coercing word types (see Data.Word) to and from integer
types preserves representation, not sign.
- The rules that hold for Enum instances over a
bounded type such as Int (see the section of the
Haskell report dealing with arithmetic sequences) also hold for the
Enum instances over the various
Int types defined here.
- Right and left shifts by amounts greater than or equal to the width
of the type result in either zero or -1, depending on the sign of
the value being shifted. This is contrary to the behaviour in C,
which is undefined; a common interpretation is to truncate the shift
count to the width of the type, for example 1 << 32
== 1 in some C implementations.
|Produced by Haddock version 0.6|