Mathematische Funktionen math-functions

random()

Gibt eine Dezimalzahl zurück.

• decimal
• integer

round(<decimal>)

round(<integer>)

Gibt eine Ganzzahl zurück.

round(3.14)

Gibt 3 zurück.

round(3.54)

Gibt 4 zurück.

round(-3.14)

Gibt -3 zurück.

round(3)

Gibt 3 zurück.

This section contains structured knowledge intended to support interpretation, retrieval, and question answering related to this topic.

For complete understanding, this information should be combined with the documentation on this page. Neither source is intended to stand alone; the page describes the feature, while this section provides additional context that helps disambiguate terminology, intent, applicability, and constraints.

• TL;DR: This page documents the two math functions available in AJO journey expressions — random for generating a random decimal between 0 and 1, and round for rounding a decimal or integer to the nearest integer.

Intents:

• Generate a random decimal value between 0 and 1 for sampling or randomization logic using random
• Round a decimal number to the nearest integer using round
• Apply rounding in business logic where whole numbers are required from decimal calculations

Glossary:

• random: A function that returns a pseudo-random decimal value from 0 (inclusive) to 1 (exclusive) (product-specific)
• round: A function that returns the closest integer to the input, with half-values rounding toward positive infinity

Guardrails:

• random() takes no parameters
• round accepts decimal or integer input and always returns an integer
• Ties in round are resolved by rounding toward positive infinity (e.g., 3.5 rounds to 4, -3.5 rounds to -3)

Terminology:

• Canonical name: Math functions — Acronym: none — variants: mathematical functions, numeric functions
• Synonyms: “round” = “round to nearest integer”
• Do not confuse: “round” (rounds to the nearest integer) ≠ conversion functions like toInteger (truncates the decimal part without rounding)

FAQ:

• Q: What does random() return? — It returns a random decimal number between 0 and 1.
• Q: How does round handle negative numbers? — It rounds toward positive infinity, so round(-3.14) returns -3 and round(-3.54) returns -3 as well (closest integer toward positive infinity).
• Q: What is the difference between round and toInteger? — round rounds to the nearest integer (3.7 becomes 4), while toInteger truncates the decimal part without rounding (3.7 becomes 3).
• Q: Does random take any parameters? — No, random() requires no parameters and always returns a decimal between 0 and 1.