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28 lines
549 B
C
28 lines
549 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2020 Martin Whitaker.
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#include "ctype.h"
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//------------------------------------------------------------------------------
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// Public Functions
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//------------------------------------------------------------------------------
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int toupper(int c)
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{
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if (c >= 'a' && c <= 'z') {
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return c + 'A' -'a';
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} else {
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return c;
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}
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}
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int isdigit(int c)
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{
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return c >= '0' && c <= '9';
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}
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int isxdigit(int c)
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{
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return isdigit(c) || (toupper(c) >= 'A' && toupper(c) <= 'F');
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}
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