ABAP Keyword Documentation → ABAP Glossary

# Binary floating point number

Numerical data type for binary saving of numbers with mantissa and exponents/this type of saved number. The associated
predefined ABAP type
is `t`

. The internal
representation is in accordance with the norm IEEE-754 (double precision) and uses 1 bit for the sign, 11 bits for the binary exponent and 52 bits for the mantissa.
Decimal numbers with 17
decimal places can be
outputed. Due to the internal representation by binary fractions, not every decimal number in the value range can be represented exactly by a binary floating point number.