12.1 Integer division with operator/ | Stan Functions Reference

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12.1 Integer division with `operator/`

Deprecated: Using / with two integer arguments is interpreted as integer floor division, such that

$1 / 2 = 0$

This is deprecated due to its confusion with real-valued division, where

$1.0 / 2.0 = 0.5$

Replacement: Use the integer division operator operator%/% instead.