noun
upper and lower bounds; bounds
Technical computing term for the upper and lower limits of a range, such as in algorithms, data structures, or numerical analysis.
このアルゴリズムでは、探索範囲の上下限を設定する必要がある。
In this algorithm, you need to set the upper and lower bounds of the search range.
下限 means 'lower limit' or 'floor', while 上下限 refers to both upper and lower limits together.
Compound of 上 (じょう, 'upper'), 下 (げ, 'lower'), and 限 (げん, 'limit'). The reading じょうげげん follows standard on'yomi patterns.