144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/* See the end of this file for copyright, licensing, and warranty information. */
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#pragma once
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#include <toolchain.h>
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/**
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* Return whether `c` is an alphabetic character.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is an alphabetic character, zero if not.
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*/
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int isalpha(int c);
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/**
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* Return whether `c` is a control character.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a control character, zero if not.
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*/
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int iscntrl(int c);
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/**
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* Return whether `c` is a digit.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a digit, zero if not.
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*/
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int isdigit(int c);
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/**
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* Return whether `c` is a printable character except space.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a printable character and not space,
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* zero if not.
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*/
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int isgraph(int c);
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/**
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* Return whether `c` is a lowercase letter.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is lowercase, zero if not.
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*/
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int islower(int c);
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/**
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* Return whether `c` is a printable character including space.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a printable character, zero if not.
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*/
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int isprint(int c);
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/**
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* Return whether `c` is a printable character
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* but neither alphanumeric nor space.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a punctuation character, zero if not.
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*/
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int ispunct(int c);
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/**
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* Return whether `c` is a white-space character.
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* These are: space, line-feed (`\n`), vertical tab (`\v`), form-feed (`\f`),
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* and carriage return (`\r`).
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a white-space character, zero if not.
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*/
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int isspace(int c);
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/**
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* Return whether `c` is an uppercase letter.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is uppercase, zero if not.
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*/
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int isupper(int c);
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/**
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* Return whether `c` is a hexadecimal digit.
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* This includes: 0-9, A-F and a-f.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a blaank character, zero if not.
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*/
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int isxdigit(int c);
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/**
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* Return whether `c` is a 7-bit unsigned char.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is an ASCII character, zero if not.
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*/
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int isascii(int c);
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/**
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* Return whether `c` is a space or a tab character.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if `c` is a blank character, zero if not.
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*/
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int isblank(int c);
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/**
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* Check whether `c` is an alphanumeric character.
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* Equivalent to `(isalpha(c) || isdigit(c))`.
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*
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* @param c: The character, cast to an `int`.
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* @returns A nonzero value if the character is alphanumeric, zero if not.
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*/
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__always_inline int isalnum(int c)
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{
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return isalpha(c) || isdigit(c);
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}
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/*
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* Copyright (c) 2020 Felix Kopp <sandtler@sandtler.club>
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors may be
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* used to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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