diff options
author | David Sterba <dsterba@suse.com> | 2017-02-01 16:09:47 +0100 |
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committer | David Sterba <dsterba@suse.com> | 2017-03-08 13:00:46 +0100 |
commit | a09f0e96e79e27fc8f34ddb4077682fe09f43cf2 (patch) | |
tree | 7757be7416864215f77c9801d1d7bcfcdb4b8eb2 /utils.c | |
parent | ca92914804be310293c0b447de9fcd79ffb728ce (diff) |
btrfs-progs: move utils code out of header
There are not performance critical static inlines, we can do the normal
declaration/definition split for various helpers.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'utils.c')
-rw-r--r-- | utils.c | 53 |
1 files changed, 53 insertions, 0 deletions
@@ -2266,6 +2266,32 @@ unsigned int get_unit_mode_from_arg(int *argc, char *argv[], int df_mode) return unit_mode; } +u64 div_factor(u64 num, int factor) +{ + if (factor == 10) + return num; + num *= factor; + num /= 10; + return num; +} +/* + * Get the length of the string converted from a u64 number. + * + * Result is equal to log10(num) + 1, but without the use of math library. + */ +int count_digits(u64 num) +{ + int ret = 0; + + if (num == 0) + return 1; + while (num > 0) { + ret++; + num /= 10; + } + return ret; +} + int string_is_numerical(const char *str) { if (!str) @@ -2397,6 +2423,7 @@ out: return ret; } +/* Set the seed manually */ void init_rand_seed(u64 seed) { int i; @@ -2446,6 +2473,7 @@ u32 rand_u32(void) return (u32)jrand48(rand_seed); } +/* Return random number in range [0, upper) */ unsigned int rand_range(unsigned int upper) { __init_seed(); @@ -2456,6 +2484,31 @@ unsigned int rand_range(unsigned int upper) return (unsigned int)(jrand48(rand_seed) % upper); } +int rand_int(void) +{ + return (int)(rand_u32()); +} + +u64 rand_u64(void) +{ + u64 ret = 0; + + ret += rand_u32(); + ret <<= 32; + ret += rand_u32(); + return ret; +} + +u16 rand_u16(void) +{ + return (u16)(rand_u32()); +} + +u8 rand_u8(void) +{ + return (u8)(rand_u32()); +} + void btrfs_config_init(void) { } |