nbdkit_parse_probability - parse probabilities for nbdkit
#include <nbdkit-plugin.h>
int nbdkit_parse_probability (const char *what, const char *str,
double *ret);Use the nbdkit_parse_probability utility function to parse probabilities. Common formats understood include: "0.1", "1e-1", "10%", "1:10" or "1/10", which all mean a probability of 1 in 10.
The what parameter is printed in error messages to provide context. The str parameter is the probability string.
On success the function returns 0 and sets *ret. The probability is always a finite number ≥ 0.0, but note the result may be larger than 1.0 (for example if str == "200%" then the function will set *ret = 2.0). If you want to clamp the upper bound the caller must do that.
On error, nbdkit_error(3) is called and -1 is returned.
NBDKit.parse_probability : string -> string -> float import nbdkit
size = nbdkit.parse_probability(what, str) use nbdkit::*;
pub fn parse_probability(what: &str, s: &str) -> Result<f64>nbdkit_parse_probability was added in nbdkit 1.36.
nbdkit(1), nbdkit_parse_bool(3), nbdkit_parse_delay(3), nbdkit_parse_int(3), nbdkit_parse_size(3), nbdkit-plugin(3), nbdkit-filter(3), nbdkit-error-filter(1), nbdkit-evil-filter(1).
Richard W.M. Jones
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