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pdp10_stdint.hrl: add ranges and types for 9- and 18-bit signed integers

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This commit is contained in:
Mikael Pettersson 2020-02-16 19:21:15 +01:00
parent e1c2d1d8b9
commit 41a26ca60a
1 changed files with 11 additions and 4 deletions
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15
erlang/apps/lib/include/pdp10_stdint.hrl
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@ -1,7 +1,7 @@
%%% -*- erlang-indent-level: 2 -*-
%%%
%%% pdp10_stdint.hrl -- stdint.h clone for PDP10
%%% Copyright (C) 2013-2019 Mikael Pettersson
%%% Copyright (C) 2013-2020 Mikael Pettersson
%%%
%%% This file is part of pdp10-tools.
%%%
@ -20,10 +20,9 @@
%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%
%%% Provide stdint.h-like type names and macros for 9, 18, and 36-bit unsigned
%%% integer types.
%%% Provide stdint.h-like type names and macros for 9, 18, and 36-bit integers.
%%%
%%% Standard uint<N>_t types must not contain any any extraneous bits, but that
%%% Standard {u,}int<N>_t types must not contain any extraneous bits, but that
%%% cannot be guaranteed for these 9, 18, and 36-bit types embedded in Erlang
%%% integers of unbounded precision. For arithmetic on these types, use the
%%% operations provided by pdp10_arith.
@ -38,9 +37,17 @@
-define(PDP10_UINT9_MAX, ((1 bsl 9) - 1)).
-type uint9_t() :: 0..?PDP10_UINT9_MAX.
-define(PDP10_INT9_MAX, ((1 bsl (9 - 1)) - 1)).
-define(PDP10_INT9_MIN, (-?PDP10_INT9_MAX - 1)).
-type int9_t() :: ?PDP10_INT9_MIN..?PDP10_INT9_MAX.
-define(PDP10_UINT18_MAX, ((1 bsl 18) - 1)).
-type uint18_t() :: 0..?PDP10_UINT18_MAX.
-define(PDP10_INT18_MAX, ((1 bsl (18 - 1)) - 1)).
-define(PDP10_INT18_MIN, (-?PDP10_INT18_MAX - 1)).
-type int18_t() :: ?PDP10_INT18_MIN..?PDP10_INT18_MAX.
-define(PDP10_UINT36_MAX, ((1 bsl 36) - 1)).
-type uint36_t() :: 0..?PDP10_UINT36_MAX.