Get Example source ABAP code based on a different SAP table
ARTICLE • b ABAP_TYPE • decfloat16 ABAP_TYPE • decfloat34 ABAP_TYPE • f ABAP_TYPE • i ABAP_TYPE • p ABAP_TYPE • s ABAP_TYPE
Predefined Numeric Types The data objects of the numeric data types are used to handle number values.
PropertiesTypeLengthStandard LengthName b1 byte 1-byte integer (internal) s2 byte 2-byte integer (internal) i4 byte 4-byte integer int88 Byte 8-Byte-Integer p1 to 16 bytes8 bytePacked number decfloat168 byte Decimal floating point number with 16 decimal places decfloat3416 byte Decimal floating point number with 34 decimal places f8 byte Binary floating point number with 17 decimal places
Value Ranges and Initial ValuesTypeValue RangeInitial Value b0 to 2550 s-32,768 to +32,7670 i-2,147,483,648 to +2,147,483,6470 int8-9.223.372.036.854.775.808 bis +9.223.372.036.854.775.807 0 pThe valid length for packed numbers is between 1 and 16 bytes; two decimal places are packed into one byte, whereby the last byte only contains one place and the plus/minus sign; after the decimal separator, up to 14 decimal places are permitted. Depending on the field length len and the number of decimal places dec, the following applies for the value range: (-10^(2 len -1) +1) / (10^(+dec)) to (+10^(2len -1) -1) /(10^(+dec)) in steps of 10^(-dec). Values in between this range are rounded; invalid contents result in undefined behavior.0 decfloat16Decimal floating point numbers of this type are represented internally with 16 decimal places in accordance with the IEEE-754-2008 standard; valid values are numbers between 1E385(1E-16 - 1) and -1E-383 for the negative range, 0 and +1E-383 to 1E385(1 - 1E-16) for the positive range. Values lying between the ranges form the subnormal range and are rounded; outside of the subnormal range, each 16-digit decimal number can be represented precisely with such a decimal floating point number0 decfloat34Decimal floating point numbers of this type are represented internally with 34 decimal places in accordance with the IEEE-754-2008 standard; valid values are numbers between 1E6145(1E-34 - 1) and -1E-6143 for the negative range, 0 and +1E-6143 and 1E6145(1 - 1E-34) for the positive range. Values lying between the ranges form the subnormal range and are rounded; outside of the subnormal range, each 34-digit decimal number can be represented precisely with such a decimal floating point number0 fBinary floating point numbers are represented internally in accordance with the IEEE-754 standard (double precision); in ABAP, 17 decimal places are represented (one place before the decimal point and 16 places in the fractional part). Valid values are numbers between -1.7976931348623157E+308 and -2.2250738585072014E-308 for the negative range and between +2.2250738585072014E-308 and +1.7976931348623157E+308 for the positive range, plus 0. Both validity intervals are extended in the direction of zero using subnormal numbers in accordance with the IEEE-754 standard. 0
ABAP_PGL Selecting the Numeric Type
Notes
The numeric data types are used for numeric calculations. Here, the data type f for binary floating point numbers is replaced largely by the types decfloat16 and decfloat34 for decimal floating point numbers.
The types b and s are internal types and cannot be specified either statically or dynamically in ABAP statements. Self-defined data types and data objects in ABAP programs have the data types b or s if they have been defined with reference to data elements of the ABAP Dictionary that have the external data types INT1 or INT2.
The type p, for which a length interval is specified in the second column in the first table, is generic, which means that the length is not part of the type description. Also, the fractional portion is undefined as well as the length. The entry in the Standard Length column specifies the length used in declarations of data objects when using types with generic lengths, if no explicit length is specified in the relevant statement.
The system class CL_ABAP_MATH contains constants for the minimum and maximum values of most numeric types.
Since the decimal places of a floating point number of type f are represented internally as dual fractions, there is not an exact equivalent for every number that can be represented in the decimal system. This can lead to rounding errors in conversions and intermediate results of calculations. These errors can be avoided by using a two-step rounding procedure.
For data objects of data type p, the program attribute Fixed Point Arithmetic must be set so that the decimal separator is taken into account. Otherwise, in all operations, the content is handled as if there is no decimal separator. The sequence of digits in the variables of type p is interpreted as a whole number. Exceptions are:
Representation on screens
Formatting with WRITE [TO]
Assignments to character-like objects with the types c and string
For decimal floating point numbers, the ABAP runtime environment uses runtime modules of decNumber (c) Copyright IBM Corporation 2001, 2004. All rights reserved.
See also Numeric Data Types.
Example According to the formula in the table, the value range of a packed number with length 2 and two decimal places is (-10^(2x2 -1) +1) / (10^2) to (+10^(2x2 -1) -1) / (10^2) and therefore =-9.99 to +9.99 in steps of 0.01. A value within this range, for example 1.428, is rounded up to 1.43. DATA: pack TYPE p LENGTH 2 DECIMALS 2, result TYPE REF TO data.
FIELD-SYMBOLS <(><<)>result> TYPE ANY.
result = cl_abap_exceptional_values=>get_min_value( pack ).
IF result IS NOT INITIAL. ASSIGN result->* TO <(><<)>result>. cl_demo_output=>write_data( <(><<)>result> ). ENDIF.
result = cl_abap_exceptional_values=>get_max_value( pack ).
IF result IS NOT INITIAL. ASSIGN result->* TO <(><<)>result>. cl_demo_output=>write_data( <(><<)>result> ). ENDIF.