79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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/**
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* @file include/gmisc/options.h
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* @brief GMISC - Miscellaneous Routines options header file.
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*
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* @addtogroup GMISC
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* @{
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*/
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#ifndef _GMISC_OPTIONS_H
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#define _GMISC_OPTIONS_H
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/**
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* @name GMISC Functionality to be included
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* @{
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*/
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/**
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* @brief Include array operation functions
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* @details Defaults to FALSE
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*/
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#ifndef GMISC_NEED_ARRAYOPS
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#define GMISC_NEED_ARRAYOPS FALSE
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#endif
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/**
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* @brief Include fast fixed point trig functions (sin, cos)
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* @details Defaults to FALSE
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*/
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#ifndef GMISC_NEED_FIXEDTRIG
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#define GMISC_NEED_FIXEDTRIG FALSE
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#endif
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/**
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* @brief Include fast inverse square root (x^-1/2)
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* @details Defaults to FALSE
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*/
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#ifndef GMISC_NEED_INVSQRT
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#define GMISC_NEED_INVSQRT FALSE
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#endif
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/**
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* @}
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*
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* @name GMISC Optional Parameters
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* @{
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*/
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/**
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* @brief Modifies the @p invsqrt() function to assume a different integer to floating point endianness.
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* @note Normally the floating point format and the integer format have
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* the same endianness. Unfortunately there are some strange
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* processors that don't eg. some very early ARM devices.
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* For those where the endianness doesn't match you can fix it by
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* defining GMISC_INVSQRT_MIXED_ENDIAN.
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* @note This still assumes the processor is using an ieee floating point format.
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*
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* If you have a software floating point that uses a non-standard
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* floating point format (or very strange hardware) then define
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* GMISC_INVSQRT_REAL_SLOW and it will do it the hard way.
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*/
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#ifndef GMISC_INVSQRT_MIXED_ENDIAN
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#define GMISC_INVSQRT_MIXED_ENDIAN FALSE
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#endif
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/**
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* @brief Modifies the @p invsqrt() function to do things the long slow way.
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* @note This causes the @p invsqrt() function to work regardless of the
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* processor floating point format.
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* @note This makes the @p invsqrt() function very slow.
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*/
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#ifndef GMISC_INVSQRT_REAL_SLOW
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#define GMISC_INVSQRT_REAL_SLOW FALSE
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#endif
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/** @} */
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#endif /* _GMISC_OPTIONS_H */
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/** @} */
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