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104f811e67
This unifies all the EC header files to use __CROS_EC_FILENAME_H as the include guard. Well, except for test/ util/ and extra/ which use __TEST_ __UTIL_ and __EXTRA_ prefixes respectively. BUG=chromium:496895 BRANCH=none TEST=make buildall -j Signed-off-by: Bill Richardson <wfrichar@chromium.org> Change-Id: Iea71b3a08bdec94a11239de810a2b2e152b15029 Reviewed-on: https://chromium-review.googlesource.com/278121 Reviewed-by: Randall Spangler <rspangler@chromium.org>
25 lines
474 B
C
25 lines
474 B
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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/* Math utility functions for ARMv7 */
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#ifndef __CROS_EC_MATH_H
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#define __CROS_EC_MATH_H
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#ifdef CONFIG_FPU
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static inline float sqrtf(float v)
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{
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float root;
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asm volatile(
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"fsqrts %0, %1"
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: "=w" (root)
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: "w" (v)
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);
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return root;
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}
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#endif /* CONFIG_FPU */
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#endif /* __CROS_EC_MATH_H */
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