37 lines
880 B
C
37 lines
880 B
C
/** Utilities.
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*
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* @author Steffen Vogel <post@steffenvogel.de>
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* @copyright 2014-2017, Steffen Vogel
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* @license GPLv3
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* @file
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*********************************************************************************/
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#ifndef _UTILS_H_
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#define _UTILS_H_
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#include <stdint.h>
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#include <stdarg.h>
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#define MIN(x, y) ((x < y) ? x : y)
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#define MAX(x, y) ((x > y) ? x : y)
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void hexdump(void *mem, unsigned int len);
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void * alloc(size_t bytes);
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/* Compute Internet Checksum for "count" bytes beginning at location "addr".
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*
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* Source: RFC 1071
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*/
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uint16_t chksum_rfc1071(char *buf, size_t count);
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/** Safely append a format string to an existing string.
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*
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* This function is similar to strlcat() from BSD.
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*/
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int strap(char *dest, size_t size, const char *fmt, ...);
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/** Variadic version of strap() */
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int vstrap(char *dest, size_t size, const char *fmt, va_list va);
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#endif
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