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(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, Collège de France and Inria Paris *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Lesser General Public License as *)
(* published by the Free Software Foundation, either version 2.1 of *)
(* the License, or (at your option) any later version. *)
(* This file is also distributed under the terms of the *)
(* INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
(** Platform-specific built-in functions *)
Require Import String Coqlib.
Require Import AST Integers Floats Values.
Require Import Builtins0.
Inductive platform_builtin : Type :=
| BI_fmin
| BI_fmax.
Local Open Scope string_scope.
Definition platform_builtin_table : list (string * platform_builtin) :=
("__builtin_fmin", BI_fmin)
:: ("__builtin_fmax", BI_fmax)
:: nil.
Definition platform_builtin_sig (b: platform_builtin) : signature :=
match b with
| BI_fmin | BI_fmax =>
mksignature (Tfloat :: Tfloat :: nil) Tfloat cc_default
end.
Definition platform_builtin_sem (b: platform_builtin) : builtin_sem (sig_res (platform_builtin_sig b)) :=
match b with
| BI_fmin =>
mkbuiltin_n2t Tfloat Tfloat Tfloat
(fun f1 f2 => match Float.compare f1 f2 with
| Some Lt => f1
| Some Eq | Some Gt | None => f2
end)
| BI_fmax =>
mkbuiltin_n2t Tfloat Tfloat Tfloat
(fun f1 f2 => match Float.compare f1 f2 with
| Some Gt => f1
| Some Eq | Some Lt | None => f2
end)
end.
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