arm-trusted-firmware/lib/libc/memcmp.c
Ambroise Vincent 609e053caa Remove several warnings reported with W=1
Improved support for W=1 compilation flag by solving missing-prototypes
and old-style-definition warnings.

The libraries are compiling with warnings (which turn into errors with
the Werror flag).

Outside of libraries, some warnings cannot be fixed without heavy
structural changes.

Change-Id: I1668cf99123ac4195c2a6a1d48945f7a64c67f16
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
2019-04-01 10:43:42 +01:00

25 lines
424 B
C

/*
* Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stddef.h>
#include <string.h>
int memcmp(const void *s1, const void *s2, size_t len)
{
const unsigned char *s = s1;
const unsigned char *d = s2;
unsigned char sc;
unsigned char dc;
while (len--) {
sc = *s++;
dc = *d++;
if (sc - dc)
return (sc - dc);
}
return 0;
}