| fpclassify | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| ilogb | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| isnormal | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| logB | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| nearbyint | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| nextafter | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| nexttoward | C99 'math' Library Functions (where Not in Standard aka 'Base' R) | 
| randI | Random Integers of Specified Number of Digits | 
| roundAll | Rounding Numbers to Decimal Digits - Variants | 
| roundVersions | Rounding Numbers to Decimal Digits - Variants | 
| roundX | Rounding Numbers to Decimal Digits - Variants | 
| round_r3 | Rounding Numbers to Decimal Digits - Variants | 
| signbit | C99 'math' Library Functions (where Not in Standard aka 'Base' R) |