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Diffstat (limited to 'theories/Strings/Ascii.v')
| -rw-r--r-- | theories/Strings/Ascii.v | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/theories/Strings/Ascii.v b/theories/Strings/Ascii.v index 06b02ab211..37d30a282c 100644 --- a/theories/Strings/Ascii.v +++ b/theories/Strings/Ascii.v @@ -173,6 +173,14 @@ Proof. apply N_ascii_bounded. Qed. +Definition ltb (a b : ascii) : bool := + (N_of_ascii a <? N_of_ascii b)%N. + +Definition leb (a b : ascii) : bool := + (N_of_ascii a <=? N_of_ascii b)%N. + +Infix "<?" := ltb : char_scope. +Infix "<=?" := leb : char_scope. (** * Concrete syntax *) |