77 lines
1.4 KiB
Plaintext
77 lines
1.4 KiB
Plaintext
(*
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BSD 2-Clause License
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Copyright (c) 2020, Anton Krotov
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All rights reserved.
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*)
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MODULE Out;
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IMPORT SYSTEM, Libdl;
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VAR
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printf1: PROCEDURE [linux] (fmt: INTEGER; x: INTEGER);
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printf2: PROCEDURE [linux] (fmt: INTEGER; width, x: INTEGER);
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printf3: PROCEDURE [linux] (fmt: INTEGER; width, precision: INTEGER; x: REAL);
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PROCEDURE Char* (x: CHAR);
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BEGIN
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printf1(SYSTEM.SADR("%c"), ORD(x))
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END Char;
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PROCEDURE String* (s: ARRAY OF CHAR);
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BEGIN
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printf2(SYSTEM.SADR("%.*s"), LENGTH(s), SYSTEM.ADR(s[0]))
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END String;
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PROCEDURE Ln*;
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BEGIN
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printf1(SYSTEM.SADR("%s"), SYSTEM.SADR(0AX))
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END Ln;
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PROCEDURE Int* (x, width: INTEGER);
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BEGIN
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printf2(SYSTEM.SADR("%*d"), width, x)
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END Int;
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PROCEDURE Real* (x: REAL; width: INTEGER);
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BEGIN
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printf3(SYSTEM.SADR("%*.*E"), width, MAX(MIN(width - 8, 15), 1), x)
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END Real;
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PROCEDURE FixReal* (x: REAL; width, precision: INTEGER);
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BEGIN
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printf3(SYSTEM.SADR("%*.*f"), width, precision, x)
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END FixReal;
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PROCEDURE Open*;
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END Open;
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PROCEDURE init;
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VAR
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libc, printf: INTEGER;
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BEGIN
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libc := Libdl.open("libc.so.6", Libdl.LAZY);
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ASSERT(libc # 0);
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printf := Libdl.sym(libc, "printf");
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ASSERT(printf # 0);
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SYSTEM.PUT(SYSTEM.ADR(printf1), printf);
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SYSTEM.PUT(SYSTEM.ADR(printf2), printf);
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SYSTEM.PUT(SYSTEM.ADR(printf3), printf);
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END init;
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BEGIN
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init
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END Out. |