Elmomc SimplIQ Software Manual Instrukcja Użytkownika Pobierz pdf (Strona 22)

SimplIQ Software Manual The Interpreter Language

MAN-SIMSW (Ver. 1.4)

4-4

The default precedence can be overridden using parentheses, as in the following

examples:

A = 3;

B = 2;

C = A/B/2;

C = 0.75

C = A/(B/2)

C = 3

4.2.3 General Rules for Operators

Most arithmetic operators work on both integers and floats. An arithmetic operation

between integers yields integers. An operation between floating-point numbers, or

between an integer and a floating-point number, yields a floating-point result. For

example, all of the following expressions are legitimate:

1+2

(The result is 3, integer.)

1+0x10

(The result is 17, integer. Note that 0x10 is treated as a standard

integer.)

1+2.0

(The result is 3.0, float.)

2.1+3.4

(The result is 5.5, float.)

If the result of add and subtract operations between two integers exceeds the integer

range [-2,147,483,648…2,147,483,647], the result is truncated and the type remains an

integer. For example:

The result of 2,147,483,647 + 10 is -2,147,483,639

A division operation between two integers may yield a floating-point result if the result

includes a remainder. For example:

8/2

(The result is 4, integer.)

9/2.0

(The result is 4.5, float.)

If a multiplication operation between two integers exceeds the integer range, the result is

converted into a floating-point number and is not truncated. For example:

100,000 * 100,000

(The result is 1.0e+10, float.)

Bit operators require an integer input. Floating-point inputs to bit operators are truncated to

integers. For example:

7.9 & 3.4

is equivalent to

7 & 3

because the floating-point number

7.9

is truncated to the

integer

and

3.4

is truncated to the integer

before applying the operator

(bitwise AND).

The result of a unary minus operation for the minimum integer value exceeds the

integer range; therefore, the result is truncated to the maximum integer value:

-0x80,000,000 results in 2,147,483,647 or 0x7FFFFFFF.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 225 226

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