| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| Borislav Petkov | a17bce4 | 2013-09-30 11:56:24 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Count the digits of @val including a possible sign. | ||||
| 4 | * | ||||
| 5 | * (Typed on and submitted from hpa's mobile phone.) | ||||
| 6 | */ | ||||
| Borislav Petkov | 646e29a | 2013-09-27 16:35:54 +0200 | [diff] [blame] | 7 | int num_digits(int val) |
| 8 | { | ||||
| Borislav Petkov | a17bce4 | 2013-09-30 11:56:24 +0200 | [diff] [blame] | 9 | int m = 10; |
| 10 | int d = 1; | ||||
| Borislav Petkov | 646e29a | 2013-09-27 16:35:54 +0200 | [diff] [blame] | 11 | |
| Borislav Petkov | a17bce4 | 2013-09-30 11:56:24 +0200 | [diff] [blame] | 12 | if (val < 0) { |
| 13 | d++; | ||||
| 14 | val = -val; | ||||
| Borislav Petkov | 646e29a | 2013-09-27 16:35:54 +0200 | [diff] [blame] | 15 | } |
| 16 | |||||
| Borislav Petkov | a17bce4 | 2013-09-30 11:56:24 +0200 | [diff] [blame] | 17 | while (val >= m) { |
| 18 | m *= 10; | ||||
| 19 | d++; | ||||
| 20 | } | ||||
| 21 | return d; | ||||
| Borislav Petkov | 646e29a | 2013-09-27 16:35:54 +0200 | [diff] [blame] | 22 | } |