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https://github.com/ekeeke/Genesis-Plus-GX.git
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66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
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/* Copyright (C) 2010-2017 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (clamping.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _LIBRETRO_SDK_CLAMPING_H
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#define _LIBRETRO_SDK_CLAMPING_H
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#include <stdint.h>
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#include <retro_inline.h>
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/**
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* clamp_float:
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* @val : initial value
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* @lower : lower limit that value should be clamped against
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* @upper : upper limit that value should be clamped against
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*
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* Clamps a floating point value.
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*
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* Returns: a clamped value of initial float value @val.
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*/
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static INLINE float clamp_float(float val, float lower, float upper)
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{
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if (val < lower)
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return lower;
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if (val > upper)
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return upper;
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return val;
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}
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/**
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* clamp_8bit:
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* @val : initial value
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*
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* Clamps an unsigned 8-bit value.
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*
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* Returns: a clamped value of initial unsigned 8-bit value @val.
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*/
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static INLINE uint8_t clamp_8bit(int val)
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{
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if (val > 255)
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return 255;
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if (val < 0)
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return 0;
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return (uint8_t)val;
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}
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#endif
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