From: Chia-Yu Chang <[email protected]> get_float_min_max() is based on get_float() and does an additional check within the range strictly between the minimum and maximum values.
Signed-off-by: Chia-Yu Chang <[email protected]> --- include/utils.h | 1 + lib/utils.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/include/utils.h b/include/utils.h index 9a8b8026..91e6e31f 100644 --- a/include/utils.h +++ b/include/utils.h @@ -147,6 +147,7 @@ int get_long(long *val, const char *arg, int base); int get_integer(int *val, const char *arg, int base); int get_unsigned(unsigned *val, const char *arg, int base); int get_float(float *val, const char *arg); +int get_float_min_max(float *val, const char *arg, float min, float max); int get_time_rtt(unsigned *val, const char *arg, int *raw); #define get_byte get_u8 #define get_ushort get_u16 diff --git a/lib/utils.c b/lib/utils.c index 103e4875..dd242d4d 100644 --- a/lib/utils.c +++ b/lib/utils.c @@ -234,6 +234,22 @@ int get_float(float *val, const char *arg) return 0; } +int get_float_min_max(float *val, const char *arg, float min, float max) +{ + float res; + char *ptr; + + if (!arg || !*arg) + return -1; + res = strtof(arg, &ptr); + if (!ptr || ptr == arg || *ptr) + return -1; + if (res < min || res > max) + return -1; + *val = res; + return 0; +} + /* * get_time_rtt is "translated" from a similar routine "get_time" in * tc_util.c. We don't use the exact same routine because tc passes -- 2.34.1
