| 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> | |
| Data-parallel types | <simd> |