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pigweed / third_party / github / STMicroelectronics / cmsis_core / 1a2f783395dd72778a98ebe7771f36ca1c30a35e / . / DSP / Include / dsp / none.h
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/******************************************************************************
* @file none.h
* @brief Intrinsincs when no DSP extension available
* @version V1.9.0
* @date 20. July 2020
******************************************************************************/
/*
* Copyright (c) 2010-2020 Arm Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
Definitions in this file are allowing to reuse some versions of the
CMSIS-DSP to build on a core (M0 for instance) or a host where
DSP extension are not available.
Ideally a pure C version should have been used instead.
But those are not always available or use a restricted set
of intrinsics.
*/
#ifndef _NONE_H_
#define _NONE_H_
#include "arm_math_types.h"
#ifdef __cplusplus
extern "C"
{
#endif
/*
Normally those kind of definitions are in a compiler file
in Core or Core_A.
But for MSVC compiler it is a bit special. The goal is very specific
to CMSIS-DSP and only to allow the use of this library from other
systems like Python or Matlab.
MSVC is not going to be used to cross-compile to ARM. So, having a MSVC
compiler file in Core or Core_A would not make sense.
*/
#if defined ( _MSC_VER ) || defined(__GNUC_PYTHON__) || defined(__APPLE_CC__)
__STATIC_FORCEINLINE uint8_t __CLZ(uint32_t data)
{
if (data == 0U) { return 32U; }
uint32_t count = 0U;
uint32_t mask = 0x80000000U;
while ((data & mask) == 0U)
{
count += 1U;
mask = mask >> 1U;
}
return count;
}
__STATIC_FORCEINLINE int32_t __SSAT(int32_t val, uint32_t sat)
{
if ((sat >= 1U) && (sat <= 32U))
{
const int32_t max = (int32_t)((1U << (sat - 1U)) - 1U);
const int32_t min = -1 - max ;
if (val > max)
{
return max;
}
else if (val < min)
{
return min;
}
}
return val;
}
__STATIC_FORCEINLINE uint32_t __USAT(int32_t val, uint32_t sat)
{
if (sat <= 31U)
{
const uint32_t max = ((1U << sat) - 1U);
if (val > (int32_t)max)
{
return max;
}
else if (val < 0)
{
return 0U;
}
}
return (uint32_t)val;
}
/**
\brief Rotate Right in unsigned value (32 bit)
\details Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
\param [in] op1 Value to rotate
\param [in] op2 Number of Bits to rotate
\return Rotated value
*/
__STATIC_FORCEINLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
{
op2 %= 32U;
if (op2 == 0U)
{
return op1;
}
return (op1 >> op2) | (op1 << (32U - op2));
}
#endif
/**
* @brief Clips Q63 to Q31 values.
*/
__STATIC_FORCEINLINE q31_t clip_q63_to_q31(
q63_t x)
{
return ((q31_t) (x >> 32) != ((q31_t) x >> 31)) ?
((0x7FFFFFFF ^ ((q31_t) (x >> 63)))) : (q31_t) x;
}
/**
* @brief Clips Q63 to Q15 values.
*/
__STATIC_FORCEINLINE q15_t clip_q63_to_q15(
q63_t x)
{
return ((q31_t) (x >> 32) != ((q31_t) x >> 31)) ?
((0x7FFF ^ ((q15_t) (x >> 63)))) : (q15_t) (x >> 15);
}
/**
* @brief Clips Q31 to Q7 values.
*/
__STATIC_FORCEINLINE q7_t clip_q31_to_q7(
q31_t x)
{
return ((q31_t) (x >> 24) != ((q31_t) x >> 23)) ?
((0x7F ^ ((q7_t) (x >> 31)))) : (q7_t) x;
}
/**
* @brief Clips Q31 to Q15 values.
*/
__STATIC_FORCEINLINE q15_t clip_q31_to_q15(
q31_t x)
{
return ((q31_t) (x >> 16) != ((q31_t) x >> 15)) ?
((0x7FFF ^ ((q15_t) (x >> 31)))) : (q15_t) x;
}
/**
* @brief Multiplies 32 X 64 and returns 32 bit result in 2.30 format.
*/
__STATIC_FORCEINLINE q63_t mult32x64(
q63_t x,
q31_t y)
{
return ((((q63_t) (x & 0x00000000FFFFFFFF) * y) >> 32) +
(((q63_t) (x >> 32) * y) ) );
}
/* SMMLAR */
#define multAcc_32x32_keep32_R(a, x, y) \
a = (q31_t) (((((q63_t) a) << 32) + ((q63_t) x * y) + 0x80000000LL ) >> 32)
/* SMMLSR */
#define multSub_32x32_keep32_R(a, x, y) \
a = (q31_t) (((((q63_t) a) << 32) - ((q63_t) x * y) + 0x80000000LL ) >> 32)
/* SMMULR */
#define mult_32x32_keep32_R(a, x, y) \
a = (q31_t) (((q63_t) x * y + 0x80000000LL ) >> 32)
/* SMMLA */
#define multAcc_32x32_keep32(a, x, y) \
a += (q31_t) (((q63_t) x * y) >> 32)
/* SMMLS */
#define multSub_32x32_keep32(a, x, y) \
a -= (q31_t) (((q63_t) x * y) >> 32)
/* SMMUL */
#define mult_32x32_keep32(a, x, y) \
a = (q31_t) (((q63_t) x * y ) >> 32)
#ifndef ARM_MATH_DSP
/**
* @brief definition to pack two 16 bit values.
*/
#define __PKHBT(ARG1, ARG2, ARG3) ( (((int32_t)(ARG1) << 0) & (int32_t)0x0000FFFF) | \
(((int32_t)(ARG2) << ARG3) & (int32_t)0xFFFF0000) )
#define __PKHTB(ARG1, ARG2, ARG3) ( (((int32_t)(ARG1) << 0) & (int32_t)0xFFFF0000) | \
(((int32_t)(ARG2) >> ARG3) & (int32_t)0x0000FFFF) )
#endif
/**
* @brief definition to pack four 8 bit values.
*/
#ifndef ARM_MATH_BIG_ENDIAN
#define __PACKq7(v0,v1,v2,v3) ( (((int32_t)(v0) << 0) & (int32_t)0x000000FF) | \
(((int32_t)(v1) << 8) & (int32_t)0x0000FF00) | \
(((int32_t)(v2) << 16) & (int32_t)0x00FF0000) | \
(((int32_t)(v3) << 24) & (int32_t)0xFF000000) )
#else
#define __PACKq7(v0,v1,v2,v3) ( (((int32_t)(v3) << 0) & (int32_t)0x000000FF) | \
(((int32_t)(v2) << 8) & (int32_t)0x0000FF00) | \
(((int32_t)(v1) << 16) & (int32_t)0x00FF0000) | \
(((int32_t)(v0) << 24) & (int32_t)0xFF000000) )
#endif
/*
* @brief C custom defined intrinsic functions
*/
#if !defined (ARM_MATH_DSP)
/*
* @brief C custom defined QADD8
*/
__STATIC_FORCEINLINE uint32_t __QADD8(
uint32_t x,
uint32_t y)
{
q31_t r, s, t, u;
r = __SSAT(((((q31_t)x << 24) >> 24) + (((q31_t)y << 24) >> 24)), 8) & (int32_t)0x000000FF;
s = __SSAT(((((q31_t)x << 16) >> 24) + (((q31_t)y << 16) >> 24)), 8) & (int32_t)0x000000FF;
t = __SSAT(((((q31_t)x << 8) >> 24) + (((q31_t)y << 8) >> 24)), 8) & (int32_t)0x000000FF;
u = __SSAT(((((q31_t)x ) >> 24) + (((q31_t)y ) >> 24)), 8) & (int32_t)0x000000FF;
return ((uint32_t)((u << 24) | (t << 16) | (s << 8) | (r )));
}
/*
* @brief C custom defined QSUB8
*/
__STATIC_FORCEINLINE uint32_t __QSUB8(
uint32_t x,
uint32_t y)
{
q31_t r, s, t, u;
r = __SSAT(((((q31_t)x << 24) >> 24) - (((q31_t)y << 24) >> 24)), 8) & (int32_t)0x000000FF;
s = __SSAT(((((q31_t)x << 16) >> 24) - (((q31_t)y << 16) >> 24)), 8) & (int32_t)0x000000FF;
t = __SSAT(((((q31_t)x << 8) >> 24) - (((q31_t)y << 8) >> 24)), 8) & (int32_t)0x000000FF;
u = __SSAT(((((q31_t)x ) >> 24) - (((q31_t)y ) >> 24)), 8) & (int32_t)0x000000FF;
return ((uint32_t)((u << 24) | (t << 16) | (s << 8) | (r )));
}
/*
* @brief C custom defined QADD16
*/
__STATIC_FORCEINLINE uint32_t __QADD16(
uint32_t x,
uint32_t y)
{
/* q31_t r, s; without initialisation 'arm_offset_q15 test' fails but 'intrinsic' tests pass! for armCC */
q31_t r = 0, s = 0;
r = __SSAT(((((q31_t)x << 16) >> 16) + (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
s = __SSAT(((((q31_t)x ) >> 16) + (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined SHADD16
*/
__STATIC_FORCEINLINE uint32_t __SHADD16(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = (((((q31_t)x << 16) >> 16) + (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
s = (((((q31_t)x ) >> 16) + (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined QSUB16
*/
__STATIC_FORCEINLINE uint32_t __QSUB16(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = __SSAT(((((q31_t)x << 16) >> 16) - (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
s = __SSAT(((((q31_t)x ) >> 16) - (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined SHSUB16
*/
__STATIC_FORCEINLINE uint32_t __SHSUB16(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = (((((q31_t)x << 16) >> 16) - (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
s = (((((q31_t)x ) >> 16) - (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined QASX
*/
__STATIC_FORCEINLINE uint32_t __QASX(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = __SSAT(((((q31_t)x << 16) >> 16) - (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
s = __SSAT(((((q31_t)x ) >> 16) + (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined SHASX
*/
__STATIC_FORCEINLINE uint32_t __SHASX(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = (((((q31_t)x << 16) >> 16) - (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
s = (((((q31_t)x ) >> 16) + (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined QSAX
*/
__STATIC_FORCEINLINE uint32_t __QSAX(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = __SSAT(((((q31_t)x << 16) >> 16) + (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
s = __SSAT(((((q31_t)x ) >> 16) - (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined SHSAX
*/
__STATIC_FORCEINLINE uint32_t __SHSAX(
uint32_t x,
uint32_t y)
{
q31_t r, s;
r = (((((q31_t)x << 16) >> 16) + (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
s = (((((q31_t)x ) >> 16) - (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
return ((uint32_t)((s << 16) | (r )));
}
/*
* @brief C custom defined SMUSDX
*/
__STATIC_FORCEINLINE uint32_t __SMUSDX(
uint32_t x,
uint32_t y)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) -
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) ));
}
/*
* @brief C custom defined SMUADX
*/
__STATIC_FORCEINLINE uint32_t __SMUADX(
uint32_t x,
uint32_t y)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) +
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) ));
}
/*
* @brief C custom defined QADD
*/
__STATIC_FORCEINLINE int32_t __QADD(
int32_t x,
int32_t y)
{
return ((int32_t)(clip_q63_to_q31((q63_t)x + (q31_t)y)));
}
/*
* @brief C custom defined QSUB
*/
__STATIC_FORCEINLINE int32_t __QSUB(
int32_t x,
int32_t y)
{
return ((int32_t)(clip_q63_to_q31((q63_t)x - (q31_t)y)));
}
/*
* @brief C custom defined SMLAD
*/
__STATIC_FORCEINLINE uint32_t __SMLAD(
uint32_t x,
uint32_t y,
uint32_t sum)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) +
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) +
( ((q31_t)sum ) ) ));
}
/*
* @brief C custom defined SMLADX
*/
__STATIC_FORCEINLINE uint32_t __SMLADX(
uint32_t x,
uint32_t y,
uint32_t sum)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) +
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) +
( ((q31_t)sum ) ) ));
}
/*
* @brief C custom defined SMLSDX
*/
__STATIC_FORCEINLINE uint32_t __SMLSDX(
uint32_t x,
uint32_t y,
uint32_t sum)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) -
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) +
( ((q31_t)sum ) ) ));
}
/*
* @brief C custom defined SMLALD
*/
__STATIC_FORCEINLINE uint64_t __SMLALD(
uint32_t x,
uint32_t y,
uint64_t sum)
{
/* return (sum + ((q15_t) (x >> 16) * (q15_t) (y >> 16)) + ((q15_t) x * (q15_t) y)); */
return ((uint64_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) +
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) +
( ((q63_t)sum ) ) ));
}
/*
* @brief C custom defined SMLALDX
*/
__STATIC_FORCEINLINE uint64_t __SMLALDX(
uint32_t x,
uint32_t y,
uint64_t sum)
{
/* return (sum + ((q15_t) (x >> 16) * (q15_t) y)) + ((q15_t) x * (q15_t) (y >> 16)); */
return ((uint64_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) +
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) +
( ((q63_t)sum ) ) ));
}
/*
* @brief C custom defined SMUAD
*/
__STATIC_FORCEINLINE uint32_t __SMUAD(
uint32_t x,
uint32_t y)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) +
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) ));
}
/*
* @brief C custom defined SMUSD
*/
__STATIC_FORCEINLINE uint32_t __SMUSD(
uint32_t x,
uint32_t y)
{
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) -
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) ));
}
/*
* @brief C custom defined SXTB16
*/
__STATIC_FORCEINLINE uint32_t __SXTB16(
uint32_t x)
{
return ((uint32_t)(((((q31_t)x << 24) >> 24) & (q31_t)0x0000FFFF) |
((((q31_t)x << 8) >> 8) & (q31_t)0xFFFF0000) ));
}
/*
* @brief C custom defined SMMLA
*/
__STATIC_FORCEINLINE int32_t __SMMLA(
int32_t x,
int32_t y,
int32_t sum)
{
return (sum + (int32_t) (((int64_t) x * y) >> 32));
}
#endif /* !defined (ARM_MATH_DSP) */
#ifdef __cplusplus
}
#endif
#endif /* ifndef _TRANSFORM_FUNCTIONS_H_ */