Fixes mpaland#121 : Special-casing 0 and -0 in the "%g"-related expon…

…ent check, since their exponent is a special case - 0 rather minus infinity.
eyalroz · Aug 5, 2021 · a8a0b28 · a8a0b28
1 parent 66fd69a
commit a8a0b28
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/printf.c b/printf.c
@@ -534,7 +534,7 @@ static size_t sprint_exponential_number(out_fct_type out, char* buffer, size_t i
  // in "%g" mode, "precision" is the number of _significant digits_ not decimals
  if (flags & FLAGS_ADAPT_EXP) {
  // do we want to fall-back to "%f" mode?
- if ((abs_number >= 1e-4) && (abs_number < 1e6)) {
+ if ((abs_number == 0.) || ((abs_number >= 1e-4) && (abs_number < 1e6))) {
  if ((int)precision > exp10) {
  precision = (unsigned)((int)precision - exp10 - 1);
  }