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cbdd518422
Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=chrome-os-partner:9447 TEST=update from old EC 517 to this one Change-Id: I275b5bf6c4ae1ab6e0c0a05cf9260314d644c79b
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Various utility functions and macros */
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#ifndef __CROS_EC_UTIL_H
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#define __CROS_EC_UTIL_H
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#include "common.h"
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#include "config.h"
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/**
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* Trigger a compilation failure if the condition
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* is not verified at build time.
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*/
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#define BUILD_ASSERT(cond) ((void)sizeof(char[1 - 2*!(cond)]))
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/**
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* Trigger a debug exception if the condition
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* is not verified at runtime.
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*/
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#ifdef CONFIG_DEBUG
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#define ASSERT(cond) do { \
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if (!(cond)) \
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__asm("bkpt"); \
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} while (0);
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#else
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#define ASSERT(cond)
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#endif
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/* Standard macros / definitions */
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define NULL ((void *)0)
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/**
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* macros for integer division with various rounding variants
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* default integer division rounds down.
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*/
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#define DIV_ROUND_UP(x, y) (((x) + ((y) - 1)) / (y))
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#define DIV_ROUND_NEAREST(x, y) (((x) + ((y) / 2)) / (y))
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static inline uint8_t hex2asc(uint8_t hex)
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{
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return hex + ((hex > 9) ? 'A' : '0');
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}
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/* Standard library functions */
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int atoi(const char *nptr);
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int isdigit(int c);
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int isspace(int c);
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int isalpha(int c);
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void *memcpy(void *dest, const void *src, int len);
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void *memset(void *dest, int c, int len);
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void *memmove(void *dest, const void *src, int len);
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int strcasecmp(const char *s1, const char *s2);
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int strlen(const char *s);
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int strtoi(const char *nptr, char **endptr, int base);
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/* Like strncpy(), but guarantees null termination. */
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char *strzcpy(char *dest, const char *src, int len);
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int tolower(int c);
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/* 64-bit divide-and-modulo. Does the equivalent of:
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*
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* r = *n % d;
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* *n /= d;
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* return r;
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*/
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int uint64divmod(uint64_t *v, int by);
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#endif /* __CROS_EC_UTIL_H */
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