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count_significant_figures

hypercall_sdk_types::utils

Function count_significant_figures 

Source 
pub fn count_significant_figures(price_str: &str) -> Result<usize, String>
Expand description

Count significant figures in a price string.

Rules for counting significant figures:

  • Leading zeros after decimal point are NOT significant (0.00123 -> 3 sig figs)
  • Trailing zeros before decimal point are NOT significant (12300 -> 3 sig figs)
  • Trailing zeros after decimal point ARE significant (123.00 -> 5 sig figs)
  • All non-zero digits are significant