blob: a0a963e93f669fdeea2c38b5868dd1b4020c945e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
/* indexbyte.c -- implement bytes.IndexByte for Go.
Copyright 2009 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file. */
#include <stddef.h>
#include "array.h"
/* This is in C so that the compiler can optimize it appropriately.
We deliberately don't split the stack in case it does call the
library function, which shouldn't need much stack space. */
int IndexByte (struct __go_open_array, char)
asm ("libgo_bytes.bytes.IndexByte")
__attribute__ ((no_split_stack));
int
IndexByte (struct __go_open_array s, char b)
{
char *p;
p = __builtin_memchr (s.__values, b, s.__count);
if (p == NULL)
return -1;
return p - (char *) s.__values;
}
|
