cleaning comments

lib11sht.h

@@ -42,7 +42,7 @@
  *      0  if equal or similar above the shold threshold
  *     -1  if a < b alphabetically (after normalization)
  *     +1  if a > b alphabetically (after normalization)
- * On error: sets errno = EINVAL and returns 0 — see ERROR CONVENTION above.
+ * On error: sets errno = EINVAL and returns 0 -- see ERROR CONVENTION above.
  *
  * Parameters:
  *   a, b   input strings (NUL-terminated, may contain UTF-8 accented Latin chars).
@@ -68,17 +68,17 @@ int sequal(char *a, char *b, float shold);
  * comparison. The Levenshtein ratio in *ratio is computed on the
  * normalized contents of s1 / s2 (i.e. on the possibly-truncated buffer
  * data), NOT on the original a / b strings. To compare without truncation,
- * pass buffers at least as large as the longest input — LEVN_SBUFF (256)
+ * pass buffers at least as large as the longest input -- LEVN_SBUFF (256)
  * is the recommended floor.
  *
- * On error: same convention as sequal — sets errno = EINVAL and returns 0;
+ * On error: same convention as sequal -- sets errno = EINVAL and returns 0;
  * *ratio, s1, s2 are not modified in that case. See ERROR CONVENTION above.
  */
 int sequal_full(char *a, char *b, float shold, float *ratio,
                 char *s1, size_t s1_size,
                 char *s2, size_t s2_size);
 
-/* Compare two floats within ±delta.
+/* Compare two floats within +/-delta.
  * Returns:
  *      0  if |a - b| <= delta
  *     -1  if a < b - delta