| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | catanh | 3 | 114 |
| linux | catanhf | 3 | 113 |
| sunos | catanhf | 3m | 112 |
| hpux | catanh | 3m | 110 |
| hpux | catanhf | 3m | 110 |
| suse | atanh | 3p | 108 |
| opendarwin | atanhf | 3 | 106 |
| suse | atanhl | 3 | 106 |
| osx | catanhl | 3 | 103 |
| sunos | catanhl | 3m | 103 |
| centos | atanh | 3p | 102 |
| posix | atanhl | 3 | 102 |
| linux | catanhl | 3 | 100 |
| php | atanh | 3 | 100 |
| mojave | atanhf | 3 | 98 |
| centos | catanhf | 3 | 98 |
| mojave | catanhf | 3 | 93 |
| suse | catanhf | 3p | 91 |
| sunos | atanhl | 3m | 91 |
| mojave | atanhl | 3 | 90 |
| centos | catanhl | 3 | 90 |
| netbsd | catanhf | 3p | 89 |
| hpux | catanhw | 3m | 88 |
| centos | catanhf | 3p | 86 |
| centos | catanhl | 3p | 85 |
| opensolaris | atanhl | 3m | 85 |
| osx | catanhf | 3 | 83 |
| opensolaris | catanhl | 3m | 82 |
| centos | atanhl | 3 | 81 |
| hpux | atanhd128 | 3m | 81 |
| suse | atanhf | 3p | 81 |
| debian | catanhf | 3 | 80 |
| hpux | catanhq | 3m | 80 |
| ultrix | atanh | 3m | 79 |
| suse | atanhf | 3 | 79 |
| hpux | atanhq | 3m | 79 |
| debian | atanhl | 3 | 78 |
| debian | catanhl | 3 | 78 |
| centos | atanhf | 3 | 77 |
| suse | catanhl | 3p | 77 |
| osx | atanhf | 3 | 77 |
| opensolaris | atanhf | 3m | 76 |
| osx | atanhl | 3 | 75 |
| centos | atanhl | 3p | 74 |
| hpux | atanhd32 | 3m | 74 |
| hpux | atanhl | 3m | 74 |
| sunos | atanhf | 3m | 73 |
| hpux | atanhw | 3m | 71 |
| suse | atanhl | 3p | 70 |
| hpux | catanhl | 3m | 69 |