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| Related Syntax | Related Concepts | ||||||||
| operator | floor | ||||||||
Return type: BCD If the value is greater than zero, it is truncated to the specified precision. If the value is less than zero, it is rounded down to the nearest multiple of the specified precision.
Returns:
Syntax
floor bcd-expression (by precision)? floor float-expression (by precision)?
Use floor to round down:
If you include the keyword "by" and specify the precision, floor will round down to the multiple of the precision you have specified.
If you do not include the keyword "by" and do not specify the precision, floor will round down to the next integer whose value is less than the expression.
For values greater than zero, floor works like truncate. For values less than zero, floor rounds down to the next whole number less than or equal to the original value.
Include either ombcd.xin or omfloat.xin in your program after deciding whether you want BCD mathematics (excellent for financial calculations) or floating point mathematics (excellent for extremely large numbers).
BCD Example:
Calculate the area of a circle:
include "ombcd.xin"
process
local bcd pi initial {"3.14179"}
local bcd radius initial {"74"}
local bcd area
set area to floor (pi * radius * radius)
output "area of circle with radius " || "d" % radius || " is at least " || "d" % area || "%n"
You can specify the precision of the truncation/rounding. The following program uses a precision of 0.01 to truncate/round the value at the whole cents position:
include "ombcd.xin"
process
local bcd exchange-rate initial {1.4356}
local bcd us-price initial {129.95}
local bcd canadian-price
set canadian-price to floor (us-price*exchange-rate) by bcd 0.01
output "us " || "<$,NNZ.ZZ>" % us-price || " is at least " || "<$,NNZ.ZZ>" % canadian-price || " cdn %n"
The precision specifier must be a power of 10.
Floating Point Example:
Calculate the area of a circle:
include "omfloat.xin"
process
local float pi initial {"3.14179"}
local float radius initial {"74"}
local float area
set area to floor (pi * radius * radius)
output "Area of circle with radius " || "d" % radius || " = " || "d" % area || "%n"
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Related Syntax round ceiling floor truncate |
Related Concepts BCD data type |
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