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authorDavid Sterba <dsterba@suse.com>2017-02-01 16:09:47 +0100
committerDavid Sterba <dsterba@suse.com>2017-03-08 13:00:46 +0100
commita09f0e96e79e27fc8f34ddb4077682fe09f43cf2 (patch)
tree7757be7416864215f77c9801d1d7bcfcdb4b8eb2 /utils.c
parentca92914804be310293c0b447de9fcd79ffb728ce (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.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/utils.c b/utils.c
index e7bbefbb..5aab60d3 100644
--- a/utils.c
+++ b/utils.c
@@ -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)
{
}