Visual Basic - 64-bit real number: double

64-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.



Used keywords: double


Visual Basic .NET

64-bit real number the possible of use:
Dim x As double= 3.14159265359     ' x = 3.14159265359
Dim y As double= 123456789         ' y = 123456789.0
y =CDbl((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:
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