Summary
This episode introduces C++26's new saturating math operations, which prevent overflow by clamping results to the maximum or minimum representable value of the target type. Jason demonstrates how functions like add_sat, sub_sat, mul_sat, div_sat, and saturate_cast work with small integer types, showing their benefits for safety-critical and embedded code. He examines the efficient assembly generated for saturating operations, which typically performs the operation and then conditionally clamps the result when overflow occurs. These constexpr-enabled operations provide a standardized way to handle boundary cases in numeric computations without undefined behavior.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[numeric.limits.members]65% match -
[numeric.sat]64% match -
[numeric.sat.cast]64% match -
[numeric.ops.midpoint]63% match -
[numeric.sat.func]63% match -
[numeric.special]62% match -
[numeric.limits]62% match -
[numeric.limits.general]61% match -
[depr.numeric.limits.has.denorm]61% match -
[algorithms]40% match