TRUNC DAX Function (Math and Trig)
Truncates a number to an integer by removing the decimal, or fractional, part of the number.
Syntax
TRUNC ( <Number> [, <NumberOfDigits>] )
| Parameter | Attributes | Description |
|---|---|---|
| Number |
The number you want to truncate. |
|
| NumberOfDigits | Optional |
A number specifying the precision of the truncation; if omitted, 0 (zero). |
Return values
Scalar A single decimal value.
The truncated number.
Remarks
If NumberOfDigits is greater than 0 (zero), then number is truncated to the specified number of decimal places.
If NumberOfDigits is 0, the number is truncated to the integer part.
If NumberOfDigits is less than 0, the number is truncated to the left of the decimal point.
» 1 related function
Examples
-- Example with positive numbers
--
-- Argument for rounding functions:
-- positive: at a given number of decimal places
-- zero: to the nearest integer
-- negative: rounds digits to the left of the decimal point
--
-- ROUND rounds to the nearest value
-- ROUNDDOWN always rounds down
-- ROUNDUP always rounds up
-- TRUNC truncates the decimal part, returning an integer
DEFINE
VAR Vals = GENERATESERIES ( 14.90, 16.01, 0.03 )
EVALUATE
ADDCOLUMNS (
Vals,
"ROUND 0", ROUND ( [Value], 0 ),
"ROUND +1", ROUND ( [Value], 1 ),
"ROUND -1", ROUND ( [Value], -1 ),
"ROUNDDOWN 0", ROUNDDOWN ( [Value], 0 ),
"ROUNDDOWN +1", ROUNDDOWN ( [Value], 1 ),
"ROUNDDOWN -1", ROUNDDOWN ( [Value], -1 ),
"ROUNDUP 0", ROUNDUP ( [Value], 0 ),
"ROUNDUP +1", ROUNDUP ( [Value], 1 ),
"ROUNDUP -1", ROUNDUP ( [Value], -1 ),
"TRUNC", TRUNC ( [Value] )
)
ORDER BY [Value] ASC
| Value | ROUND 0 | ROUND +1 | ROUND -1 | ROUNDDOWN 0 | ROUNDDOWN +1 | ROUNDDOWN -1 | ROUNDUP 0 | ROUNDUP +1 | ROUNDUP -1 | TRUNC |
|---|---|---|---|---|---|---|---|---|---|---|
| 14.90 | 15 | 14.90 | 10 | 14 | 14.90 | 10 | 15 | 14.90 | 20 | 14 |
| 14.93 | 15 | 14.90 | 10 | 14 | 14.90 | 10 | 15 | 15.00 | 20 | 14 |
| 14.96 | 15 | 15.00 | 10 | 14 | 14.90 | 10 | 15 | 15.00 | 20 | 14 |
| 14.99 | 15 | 15.00 | 10 | 14 | 14.90 | 10 | 15 | 15.00 | 20 | 14 |
| 15.02 | 15 | 15.00 | 20 | 15 | 15.00 | 10 | 16 | 15.10 | 20 | 15 |
| 15.05 | 15 | 15.10 | 20 | 15 | 15.00 | 10 | 16 | 15.10 | 20 | 15 |
| 15.08 | 15 | 15.10 | 20 | 15 | 15.00 | 10 | 16 | 15.10 | 20 | 15 |
| 15.11 | 15 | 15.10 | 20 | 15 | 15.10 | 10 | 16 | 15.20 | 20 | 15 |
| 15.14 | 15 | 15.10 | 20 | 15 | 15.10 | 10 | 16 | 15.20 | 20 | 15 |
| 15.17 | 15 | 15.20 | 20 | 15 | 15.10 | 10 | 16 | 15.20 | 20 | 15 |
| 15.20 | 15 | 15.20 | 20 | 15 | 15.20 | 10 | 16 | 15.20 | 20 | 15 |
| 15.23 | 15 | 15.20 | 20 | 15 | 15.20 | 10 | 16 | 15.30 | 20 | 15 |
| 15.26 | 15 | 15.30 | 20 | 15 | 15.20 | 10 | 16 | 15.30 | 20 | 15 |
| 15.29 | 15 | 15.30 | 20 | 15 | 15.20 | 10 | 16 | 15.30 | 20 | 15 |
| 15.32 | 15 | 15.30 | 20 | 15 | 15.30 | 10 | 16 | 15.40 | 20 | 15 |
| 15.35 | 15 | 15.40 | 20 | 15 | 15.30 | 10 | 16 | 15.40 | 20 | 15 |
| 15.38 | 15 | 15.40 | 20 | 15 | 15.30 | 10 | 16 | 15.40 | 20 | 15 |
| 15.41 | 15 | 15.40 | 20 | 15 | 15.40 | 10 | 16 | 15.50 | 20 | 15 |
| 15.44 | 15 | 15.40 | 20 | 15 | 15.40 | 10 | 16 | 15.50 | 20 | 15 |
| 15.47 | 15 | 15.50 | 20 | 15 | 15.40 | 10 | 16 | 15.50 | 20 | 15 |
| 15.50 | 16 | 15.50 | 20 | 15 | 15.50 | 10 | 16 | 15.50 | 20 | 15 |
| 15.53 | 16 | 15.50 | 20 | 15 | 15.50 | 10 | 16 | 15.60 | 20 | 15 |
| 15.56 | 16 | 15.60 | 20 | 15 | 15.50 | 10 | 16 | 15.60 | 20 | 15 |
| 15.59 | 16 | 15.60 | 20 | 15 | 15.50 | 10 | 16 | 15.60 | 20 | 15 |
| 15.62 | 16 | 15.60 | 20 | 15 | 15.60 | 10 | 16 | 15.70 | 20 | 15 |
| 15.65 | 16 | 15.70 | 20 | 15 | 15.60 | 10 | 16 | 15.70 | 20 | 15 |
| 15.68 | 16 | 15.70 | 20 | 15 | 15.60 | 10 | 16 | 15.70 | 20 | 15 |
| 15.71 | 16 | 15.70 | 20 | 15 | 15.70 | 10 | 16 | 15.80 | 20 | 15 |
| 15.74 | 16 | 15.70 | 20 | 15 | 15.70 | 10 | 16 | 15.80 | 20 | 15 |
| 15.77 | 16 | 15.80 | 20 | 15 | 15.70 | 10 | 16 | 15.80 | 20 | 15 |
| 15.80 | 16 | 15.80 | 20 | 15 | 15.80 | 10 | 16 | 15.80 | 20 | 15 |
| 15.83 | 16 | 15.80 | 20 | 15 | 15.80 | 10 | 16 | 15.90 | 20 | 15 |
| 15.86 | 16 | 15.90 | 20 | 15 | 15.80 | 10 | 16 | 15.90 | 20 | 15 |
| 15.89 | 16 | 15.90 | 20 | 15 | 15.80 | 10 | 16 | 15.90 | 20 | 15 |
| 15.92 | 16 | 15.90 | 20 | 15 | 15.90 | 10 | 16 | 16.00 | 20 | 15 |
| 15.95 | 16 | 16.00 | 20 | 15 | 15.90 | 10 | 16 | 16.00 | 20 | 15 |
| 15.98 | 16 | 16.00 | 20 | 15 | 15.90 | 10 | 16 | 16.00 | 20 | 15 |
| 16.01 | 16 | 16.00 | 20 | 16 | 16.00 | 10 | 17 | 16.10 | 20 | 16 |
-- Example with negative numbers
--
-- Argument for rounding functions:
-- positive: at a given number of decimal places
-- zero: to the nearest integer
-- negative: rounds digits to the left of the decimal point
--
-- ROUND rounds to the nearest value
-- ROUNDDOWN always rounds down
-- ROUNDUP always rounds up
-- TRUNC truncates the decimal part, returning an integer
DEFINE
VAR Vals = GENERATESERIES ( -16.01, -14.90, 0.03 )
EVALUATE
ADDCOLUMNS (
Vals,
"ROUND 0", ROUND ( [Value], 0 ),
"ROUND +1", ROUND ( [Value], 1 ),
"ROUND -1", ROUND ( [Value], -1 ),
"ROUNDDOWN 0", ROUNDDOWN ( [Value], 0 ),
"ROUNDDOWN +1", ROUNDDOWN ( [Value], 1 ),
"ROUNDDOWN -1", ROUNDDOWN ( [Value], -1 ),
"ROUNDUP 0", ROUNDUP ( [Value], 0 ),
"ROUNDUP +1", ROUNDUP ( [Value], 1 ),
"ROUNDUP -1", ROUNDUP ( [Value], -1 ),
"TRUNC", TRUNC ( [Value] )
)
ORDER BY [Value] ASC
| Value | ROUND 0 | ROUND +1 | ROUND -1 | ROUNDDOWN 0 | ROUNDDOWN +1 | ROUNDDOWN -1 | ROUNDUP 0 | ROUNDUP +1 | ROUNDUP -1 | TRUNC |
|---|---|---|---|---|---|---|---|---|---|---|
| -16.01 | -16 | -16.00 | -20 | -16 | -16.00 | -10 | -17 | -16.10 | -20 | -16 |
| -15.98 | -16 | -16.00 | -20 | -15 | -15.90 | -10 | -16 | -16.00 | -20 | -15 |
| -15.95 | -16 | -16.00 | -20 | -15 | -15.90 | -10 | -16 | -16.00 | -20 | -15 |
| -15.92 | -16 | -15.90 | -20 | -15 | -15.90 | -10 | -16 | -16.00 | -20 | -15 |
| -15.89 | -16 | -15.90 | -20 | -15 | -15.80 | -10 | -16 | -15.90 | -20 | -15 |
| -15.86 | -16 | -15.90 | -20 | -15 | -15.80 | -10 | -16 | -15.90 | -20 | -15 |
| -15.83 | -16 | -15.80 | -20 | -15 | -15.80 | -10 | -16 | -15.90 | -20 | -15 |
| -15.80 | -16 | -15.80 | -20 | -15 | -15.80 | -10 | -16 | -15.80 | -20 | -15 |
| -15.77 | -16 | -15.80 | -20 | -15 | -15.70 | -10 | -16 | -15.80 | -20 | -15 |
| -15.74 | -16 | -15.70 | -20 | -15 | -15.70 | -10 | -16 | -15.80 | -20 | -15 |
| -15.71 | -16 | -15.70 | -20 | -15 | -15.70 | -10 | -16 | -15.80 | -20 | -15 |
| -15.68 | -16 | -15.70 | -20 | -15 | -15.60 | -10 | -16 | -15.70 | -20 | -15 |
| -15.65 | -16 | -15.70 | -20 | -15 | -15.60 | -10 | -16 | -15.70 | -20 | -15 |
| -15.62 | -16 | -15.60 | -20 | -15 | -15.60 | -10 | -16 | -15.70 | -20 | -15 |
| -15.59 | -16 | -15.60 | -20 | -15 | -15.50 | -10 | -16 | -15.60 | -20 | -15 |
| -15.56 | -16 | -15.60 | -20 | -15 | -15.50 | -10 | -16 | -15.60 | -20 | -15 |
| -15.53 | -16 | -15.50 | -20 | -15 | -15.50 | -10 | -16 | -15.60 | -20 | -15 |
| -15.50 | -16 | -15.50 | -20 | -15 | -15.50 | -10 | -16 | -15.50 | -20 | -15 |
| -15.47 | -15 | -15.50 | -20 | -15 | -15.40 | -10 | -16 | -15.50 | -20 | -15 |
| -15.44 | -15 | -15.40 | -20 | -15 | -15.40 | -10 | -16 | -15.50 | -20 | -15 |
| -15.41 | -15 | -15.40 | -20 | -15 | -15.40 | -10 | -16 | -15.50 | -20 | -15 |
| -15.38 | -15 | -15.40 | -20 | -15 | -15.30 | -10 | -16 | -15.40 | -20 | -15 |
| -15.35 | -15 | -15.40 | -20 | -15 | -15.30 | -10 | -16 | -15.40 | -20 | -15 |
| -15.32 | -15 | -15.30 | -20 | -15 | -15.30 | -10 | -16 | -15.40 | -20 | -15 |
| -15.29 | -15 | -15.30 | -20 | -15 | -15.20 | -10 | -16 | -15.30 | -20 | -15 |
| -15.26 | -15 | -15.30 | -20 | -15 | -15.20 | -10 | -16 | -15.30 | -20 | -15 |
| -15.23 | -15 | -15.20 | -20 | -15 | -15.20 | -10 | -16 | -15.30 | -20 | -15 |
| -15.20 | -15 | -15.20 | -20 | -15 | -15.20 | -10 | -16 | -15.20 | -20 | -15 |
| -15.17 | -15 | -15.20 | -20 | -15 | -15.10 | -10 | -16 | -15.20 | -20 | -15 |
| -15.14 | -15 | -15.10 | -20 | -15 | -15.10 | -10 | -16 | -15.20 | -20 | -15 |
| -15.11 | -15 | -15.10 | -20 | -15 | -15.10 | -10 | -16 | -15.20 | -20 | -15 |
| -15.08 | -15 | -15.10 | -20 | -15 | -15.00 | -10 | -16 | -15.10 | -20 | -15 |
| -15.05 | -15 | -15.10 | -20 | -15 | -15.00 | -10 | -16 | -15.10 | -20 | -15 |
| -15.02 | -15 | -15.00 | -20 | -15 | -15.00 | -10 | -16 | -15.10 | -20 | -15 |
| -14.99 | -15 | -15.00 | -10 | -14 | -14.90 | -10 | -15 | -15.00 | -20 | -14 |
| -14.96 | -15 | -15.00 | -10 | -14 | -14.90 | -10 | -15 | -15.00 | -20 | -14 |
| -14.93 | -15 | -14.90 | -10 | -14 | -14.90 | -10 | -15 | -15.00 | -20 | -14 |
| -14.90 | -15 | -14.90 | -10 | -14 | -14.90 | -10 | -15 | -14.90 | -20 | -14 |
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Related functions
Other related functions are:
Last update: Nov 14, 2024 » Contribute » Show contributors
Contributors: Alberto Ferrari, Marco Russo, Kenneth Barber,
Microsoft documentation: https://docs.microsoft.com/en-us/dax/trunc-function-dax
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