blob: 1b336eb2aa90a32ed642d1221fbe2075a2dbe9a2 (
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
29
30
31
32
33
34
35
|
/* Copyright 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Math utility functions for ARMv7 */
#ifndef __CROS_EC_MATH_H
#define __CROS_EC_MATH_H
#ifdef CONFIG_FPU
static inline float sqrtf(float v)
{
float root;
asm volatile(
"fsqrts %0, %1"
: "=w" (root)
: "w" (v)
);
return root;
}
static inline float fabsf(float v)
{
float root;
asm volatile(
"fabss %0, %1"
: "=w" (root)
: "w" (v)
);
return root;
}
#endif /* CONFIG_FPU */
#endif /* __CROS_EC_MATH_H */
|
