Enrico Fraccaroli (Galfurian)
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/// @file ctype.h
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/// @brief Functions related to character handling.
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/// @copyright (c) 2014-2022 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#pragma once
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/// @brief Check if the given value is a digit.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int isdigit(int c);
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/// @brief Check if the given value is a letter.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int isalpha(int c);
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/// @brief Check if the given value is a control character.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int iscntrl(int c);
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/// @brief Check if the given value is either a letter or a digit.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int isalnum(int c);
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/// @brief Check if the given value is an hexadecimal digit.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int isxdigit(int c);
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/// @brief Check if the given value is a lower case letter.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int islower(int c);
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/// @brief Check if the given value is an upper case letter.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int isupper(int c);
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/// @brief Transforms the given value into a lower case letter.
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/// @param c The input letter.
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/// @return The input letter turned into a lower case letter.
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int tolower(int c);
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/// @brief Transforms the given value into an upper case letter.
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/// @param c The input letter.
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/// @return The input letter turned into an upper case letter.
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int toupper(int c);
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/// @brief Check if the given value is a whitespace.
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/// @param c The input character.
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/// @return 1 on success, 0 otherwise.
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int isspace(int c);
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