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93d77ada6c
The temperature calculation currently uses fixed point operations. Change it to use floating point for better readability and maintenance. Also changes disable_fpu() to accept parameter which serves as optimization barrier to prevent floating point operations after disabling FPU. BUG=chrome-os-partner:7801 TEST=In console, tempremote "tempremote 29715 -105000 6390" gives 28506. Change-Id: Ib766904b8feb9a78eac9f7cd53afeca85091c5a5 Signed-off-by: Vic Yang <victoryang@chromium.org>
20 lines
617 B
C
20 lines
617 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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/* FPU module for Chrome EC operating system */
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#ifndef __EC_FPU_H
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#define __EC_FPU_H
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/* Enables FPU. Note that this function also disables interrupt. */
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void enable_fpu(void);
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/* Disables FPU. This function also enables interrupt.
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* The value passed in serves as optimization barrier. This value would be
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* calculated before FPU is disabled regardless of compiler optimization. */
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void disable_fpu(int32_t);
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#endif /* __EC_FPU_H */
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