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https://github.com/memtest86plus/memtest86plus.git
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2e048a7c61
* Add preliminary support for TTY Serial/UART (#15) * Use shadow_buffer instead of VGA buffer to get a framebuffer-agnostic TTY supprot * Added menu browsing & inputs from Serial TTY (#15) * Add fix for degree symbol on TTY. Correct serial.c & serial.h file created with CRLF (#15) * Move tty_error_redraw() to insure correct redraw when a error occurs * Many reindent / cleanup * Various optimization from @martinwhitaker comments
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef STRING_H
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#define STRING_H
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/**
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* \file
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*
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* Provides a subset of the functions normally provided by <string.h>.
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*
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*//*
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* Copyright (C) 2020-2022 Martin Whitaker.
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*/
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#include <stddef.h>
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/**
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* Compares the first n bytes of the memory areas pointed to by s1 and s2
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* and returns 0 if all bytes are the same or the numerical difference
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* between the first mismatching byte in s1 (interpreted as an unsigned
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* value) and the corresponding byte in s2.
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*/
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int memcmp(const void *s1, const void *s2, size_t n);
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/**
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* Copies n bytes from the memory area pointed to by src to the memory area
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* pointed to by dest and returns a pointer to dest. The memory areas must
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* not overlap.
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*/
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void *memcpy(void *dst, const void *src, size_t n);
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/**
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* Copies n bytes from the memory area pointed to by src to the memory area
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* pointed to by dest and returns a pointer to dest. The memory areas may
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* overlap.
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*/
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void *memmove(void *dest, const void *src, size_t n);
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/**
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* Fills the first n bytes of the memory area pointed to by s with the byte
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* value c.
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*/
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void *memset(void *s, int c, size_t n);
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/**
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* Returns the string length, excluding the terminating null character.
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*/
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size_t strlen(const char *s);
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/**
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* Compares at most the first n characters in the strings s1 and s2 and
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* returns 0 if all characters are the same or the numerical difference
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* between the first mismatching character in s1 (interpreted as a signed
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* value) and the corresponding character in s2.
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*/
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int strncmp(const char *s1, const char *s2, size_t n);
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/**
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* Finds the first occurrence of the substring needle in the string haystack
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* and returns a pointer to the beginning of the located substring, or NULL
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* if the substring is not found.
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*/
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char *strstr(const char *haystack, const char *needle);
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/**
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* Convert n to characters in s
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*/
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char *itoa(int num, char *str);
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#endif // STRING_H
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