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Delphi Programming

Number types

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name size numeric range
byte 1 0 -> 255
shortint 1 -128 -> 127
word 2 0 -> 65535
smallint 2 -32768 -> 32767
longword 4 0 -> 4294967295
cardinal 4 0 -> 4294967295
longint 4

-2147483648 -> 2147483647

integer 4

-2147483648 -> 2147483647

int64 8

-9223372036854775808 -> 9223372036854775807

UInt8 1 0 -> 255
Int8 1 -128 -> 127



  • Integer and cardinal may change size in future versions.


name size sign. digits exponent
single 4 7 -38 -> 38
currency 8 more than 50 4 decimal (fixed)
double 8 15 -308 -> 308
extended 10 19 -4932 -> 4932

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