**diff options**

author | Eric Sandeen <sandeen@redhat.com> | 2013-04-26 16:06:07 -0500 |
---|---|---|

committer | David Sterba <dsterba@suse.cz> | 2013-08-09 14:32:28 +0200 |

commit | ba4f8cb41141ce5c03eb480c66ef7730eecf2efd (patch) | |

tree | 92c05d43d48f855a13a3bf2954c71d9711b7ab29 /math.h | |

parent | 37003d3627369162e05f95e8b3b244a012a46589 (diff) |

Btrfs-progs: cleanup duplicated division functions

div_factor has been implemented for two times, cleanup it.
And I move them into a independent file named math.h because they are
common math functions.
[Eric Sandeen: port kernel commit 3fed40c to userspace]
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

Diffstat (limited to 'math.h')

-rw-r--r-- | math.h | 33 |

1 files changed, 33 insertions, 0 deletions

@@ -0,0 +1,33 @@ + +/* + * Copyright (C) 2012 Fujitsu. All rights reserved. + * Written by Miao Xie <miaox@cn.fujitsu.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef __BTRFS_MATH_H +#define __BTRFS_MATH_H + +static inline u64 div_factor(u64 num, int factor) +{ + if (factor == 10) + return num; + num *= factor; + num /= 10; + return num; +} + +#endif |