Numerical operations and arithmetic operation functions

There is no data operation missing from the program, the following is an introduction to the operators supported by ABAP.

(1) Arithmetic operators

Arithmetic operators have + (plus),-(minus), * (multiply),/(except), DIV (divisible), MOD (remainder), * * (exponentiation).

The basic format of the operator is:

[COMPUTE] n=<mathematical expression>.

There must be a space between the operator and the variable to implement the addition language of a variable as follows:

Data:int TYPE I.
COMPUTE int = int + 10.
int = int + 10.
ADD ten to Int.

(2) Comparison operators

Comparison operators have EQ or = (equals), NE or <> (not equal), lt or < (less than), GT or > (greater than), le or <= (less than or equal), GE, or >= (greater than or equal to).

(3) Logical operators

logical operators Have and (and), or (or), not (non).

(4) Arithmetic operation function

The functions included in ABAP are shown in the following table:

Name of function	Description
Abs	Returns the absolute value of the input parameter
Sign	Returns the symbol for the input parameter: positive return 1,0 return 0, negative number returned-1
Ceil	Returns the smallest integer not less than the input parameter
Floor	Returns the largest integer not greater than the input parameter
TRUNC	Returns the integer portion of an input parameter
TRAC	Returns the number of decimal parts of an input parameter
ACOS (X)	Inverse cosine function, the result range is [-pi/2,pi/2],x range of from[-1,1] (PI for trigonometric functions: 3.14)
ASIN (X)	Inverse chord function, the result range is [0,pi],x range of from[-1,1]
ATAN	The inverse tangent function, the result range is [-PI/2,PI/2]
COS	cosine function
SIN	sine function
TAN	Tangent function
COSH	Cosine curve function
SINH	sinusoidal function
TANH	Tangent curve function
BX7	The curtain function of the base e (2=2.7182818284590452)
LOG	The natural logarithm of the base E
LOG10	Logarithm of base 10
SQRT	Square root
STRLEN	Get string length function

The following is an instance of a function call:

     DATA TYPE TYPE TYPE I,   　　 TYPE TYPE F,   word1 (ten), Word2 (+),   TYPE  xstring.
    = (i1+exp (f2)) * I2/sin (3 - i3).      COMPUTE * i3) + F2).      = STRLEN (word1) + STRLEN (WORD2).

Numerical operations and arithmetic operation functions