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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2009. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
#define abs(p) (((p)<0) ? -(p) : p)
/* long -> erl_integer */
/* note that this is the only place where data is stored Little Endian */
#ifndef EI_64BIT
int ei_encode_long(char *buf, int *index, long p)
{
char *s = buf + *index;
char *s0 = s;
if ((p < 256) && (p >= 0)) {
if (!buf) s += 2;
else {
put8(s,ERL_SMALL_INTEGER_EXT);
put8(s,(p & 0xff));
}
}
else if ((p <= ERL_MAX) && (p >= ERL_MIN)) {
/* FIXME: Non optimal, could use (p <= LONG_MAX) && (p >= LONG_MIN)
and skip next case */
if (!buf) s += 5;
else {
put8(s,ERL_INTEGER_EXT);
put32be(s,p);
}
}
else {
if (!buf) s += 7;
else {
put8(s,ERL_SMALL_BIG_EXT);
put8(s,4); /* len = four bytes */
put8(s, p < 0); /* save sign separately */
put32le(s, abs(p)); /* OBS: Little Endian, and p now positive */
}
}
*index += s-s0;
return 0;
}
#endif /* EI_64BIT */
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