| Subclause | Header | ||
| Requirements | |||
| Floating-point environment | <cfenv> | ||
| Complex numbers | <complex> | ||
| Random number generation | <random> | ||
| Numeric arrays | <valarray> | ||
| Mathematical functions for floating-point types | <cmath>, <cstdlib> | ||
| Numbers | <numbers> | ||
| Linear algebra | <linalg> |