delphi的变量取值范围是多少

Question

谁能确切的罗列下，delphi中整型和实型变量的取值范围？
整型是不是还分integer和Longint啊？

Answer 1

Integer
  类型               取值范围                 空间
Integer   –2147483648~2147483647    signed 32-bit
Cardinal             0~4294967295  unsigned 32-bit
Shortint         –128~127           signed 8-bit
Smallint       –32768~32767         signed 16-bit
Longint   –2147483648~2147483647    signed 32-bit
Int64            –263~263–1        signed 64-bit
Byte                 0~255         unsigned 8-bit
Word                 0~65535       unsigned 16-bit
Longword             0~4294967     unsigned 32-bit
Real类型
类型       精度             取值范围                空间
Real     15-16   5.0*10^-324~1.7*10^308       8B
Single    7-8      1.5*10^45~3.4*10-38        4B
Double   15-16   5.0*10^-324~1.7*10^308       8B
Extended 19-20  3.6*10^-4951~1.1*10^4932     10B
Currency 19-20                                8B