Goodbye, OTP 19, 20 and 21; hello, OTP 24

Author: g-andrade

.github/workflows/ci.yml

@@ -16,11 +16,9 @@ jobs:
       image: erlang:${{matrix.otp_vsn}}
     strategy:
       matrix:
-        otp_vsn: [19.0, 19.1, 19.2, 19.3,
-                  20.0, 20.1, 20.2, 20.3,
-                  21.0, 21.1, 21.2, 21.3,
-                  22.0, 22.1, 22.2, 22.3,
-                  23.0, 23.1, 23.2]
+        otp_vsn: [22.0, 22.1, 22.2, 22.3,
+                  23.0, 23.1, 23.2, 23.3,
+                  24.0]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v2

rebar.config

@@ -1,8 +1,7 @@
-{minimum_otp_vsn, "19"}.
+{minimum_otp_vsn, "22"}.
 
 {erl_opts,
- [{platform_define, "^[2-9]", 'POST_OTP_19'},
-  {platform_define, "^((2[3-9])|([3-9]))", 'POST_OTP_22'},
+ [{platform_define, "^((2[3-9])|([3-9]))", 'POST_OTP_22'},
   %bin_opt_info,
   debug_info,
   warn_export_all,

src/erlffx.erl

@@ -226,20 +226,6 @@ fk(Config, P, RoundIndex, B_Value) ->
           integer_to_list(ParamZ, Radix)]),
     ParamZ.
 
--ifndef(POST_OTP_19).
--spec ceil(float()) -> integer().
-ceil(V) when V < 0.0 ->
-    case (V - trunc(V)) >= -0.5 of
-        true -> trunc(V);
-        false -> trunc(V - 1)
-    end;
-ceil(V) ->
-    case (V - trunc(V)) >= 0.5 of
-        true -> trunc(V + 1);
-        false -> trunc(V)
-    end.
--endif.
-
 -spec generate_p(config()) -> p_value().
 generate_p(#{ tweak := Tweak,
               radix := Radix,