74 lines
2.1 KiB
C
Executable File
74 lines
2.1 KiB
C
Executable File
/*------------------------------------------------------------------------------
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Copyright 2016-2018 Sony Semiconductor Solutions Corporation
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Last Updated : 2018/07/27
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Modification ID : ff73ffebff57618d6a5aa6e2aa9eb009b86060d1
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------------------------------------------------------------------------------*/
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/**
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@file sony_math.h
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@brief The mathematics functions used in this reference code.
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*/
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/*----------------------------------------------------------------------------*/
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#ifndef SONY_MATH_H_
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#define SONY_MATH_H_
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/*------------------------------------------------------------------------------
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Includes
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------------------------------------------------------------------------------*/
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#include "sony_common.h"
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/*------------------------------------------------------------------------------
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Defines
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------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------
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Functions
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------------------------------------------------------------------------------*/
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/**
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@brief Get an integer based log2 of x and return as (log2(x) * 100)
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No checking of 0 parameter. Passing in 0
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will return 0.
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@param x The value to get the log2() of.
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@return log2(x) * 100.
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*/
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uint32_t sony_math_log2 (uint32_t x);
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/**
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@brief Get and integer based log10 of x and return as (log10(x) * 100)
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No checking of 0 parameter. Passing in 0
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will return 0.
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@param x The value to get the log10() of.
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@return log10(x) * 100.
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*/
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uint32_t sony_math_log10 (uint32_t x);
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/**
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@brief Get an integer based ln (log) of x and return as (ln(x) * 100)
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No checking of 0 parameter. Passing in 0
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will return 0.
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@param x The value to get the ln() of.
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@return ln(x) * 100.
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*/
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uint32_t sony_math_log (uint32_t x);
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/**
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@brief minimum macro if not already defined. Returns the minimum value between two numbers
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@param a First number to compare
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@param b Second number to compare
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*/
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#ifndef min
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# define min(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#endif /* SONY_MATH_H_ */
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