18 lines
292 B
C
18 lines
292 B
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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*/
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#ifndef __MATH_H__
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#define __MATH_H__
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#define M_PI 3.141592653589793238462643
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double sin(double x);
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double cos(double x);
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#endif
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