3.2 Numeric Types

_int8 : ctype?

_sint8 : ctype?

_uint8 : ctype?

_int16 : ctype?

_sint16 : ctype?

_uint16 : ctype?

_int32 : ctype?

_sint32 : ctype?

_uint32 : ctype?

_int64 : ctype?

_sint64 : ctype?

_uint64 : ctype?

The basic integer types at various sizes. The s or u prefix specifies a signed or an unsigned integer, respectively; the ones with no prefix are signed.

_byte : ctype?

_sbyte : ctype?

_ubyte : ctype?

_short : ctype?

_sshort : ctype?

_ushort : ctype?

_int : ctype?

_sint : ctype?

_uint : ctype?

_word : ctype?

_sword : ctype?

_uword : ctype?

_long : ctype?

_slong : ctype?

_ulong : ctype?

Aliases for basic integer types. The _byte aliases correspond to _int8. The _short and _word aliases correspond to _int16. The _int aliases correspond to _int32. The _long aliases correspond to either _int32 or _int64, depending on the platform.

_fixnum : ctype?

_ufixnum : ctype?

For cases where speed matters and where you know that the integer is small enough, the types _fixnum and _ufixnum are similar to _long and _ulong but assume that the quantities fit in PLT Scheme’s immediate integers (i.e., not bignums).

_fixint : ctype?

_ufixint : ctype?

Like _fixnum and _ufixnum, but coercions from C are checked to be in range.

_float : ctype?

_double : ctype?

_double* : ctype?

The _float and _double types represent the corresponding C types. The type _double* that implicitly coerces any real number to a C double.