Signed 32-Bit Integer Value Conversion: Long - Mitsubishi Electric R16MTCPU Programming Manual

Signed 32-bit integer value conversion: LONG

Format
LONG(S)
Setting data
■Usable data
: Usable
Setting Usable Data
data
Bit
device

(S)
■Description, data type of result
Setting data Description
(S) Data which will be converted into signed 32-bit integer value
Processing details
• The data specified with (S) is converted into a signed 32-bit integer value.
• The data range of (S) is -2147483648 to 2147483647.
• When (S) is a 64-bit floating-point type, its fractional portion is rounded down before conversion is made.
• If (S) is a 32-bit integer type, its value is returned unchanged, with no conversion processing performed.
Operation error
An operation error will occur if:
• The (S) data is outside the range -2147483648 to 2147483647.
• (S) is an indirectly specified device and its device No. is outside the range.
Program example
■Program which converts the data of D0 into a signed 32-bit integer value and substitutes the
result to #0L
#0L = LONG(D0)
#1 #0
#0L K-1L
(HFFFFFFFF)
4 OPERATION CONTROL PROGRAMS
170
4.9 Type Conversions
Number of basic steps
4
Word device
16-bit 32-bit 64-bit
integer integer floating
type type (L) point
type (F)
  
Usable steps
F/FS

Constant
16-bit 32-bit 64-bit
integer integer floating
type type point
(K/H) (K/H, L) type (K)
  
D0 K-1
(HFFFF)
G

Calculation Bit
expression conditional
expression
 
Data type of result
32-bit integer type
Comparison
conditional
expression
