Object Pascal - 64-bit real number: double64-bit real number and his value range: from - 1.7 × 10 on 308 to +1.7 × 10 on 308 and it has 15 digit precision. if it is used to store integers the biggest integer what can store without rounding is 2 on 53. 64-bit real number is stored the following way: 1bit sign, 8bit exponent a 23bit mantissa.
DescriptionUsed keywords: double
Object Pascal64-bit real number the possible of use:
x:= 3.14159265359; // x = 3.14159265359 y:= 123456789; // y = 123456789.0 y :=double((x * y)); // y = 387850941.35821074
you can find it in the following collections: real numbers | numbers | data types
64-bit real number in another programming language: