math.h File Reference

Performs arithmetic on sensor data. More...

#include "processor_common.h"

Go to the source code of this file.

Enumerations
enum	MblMwMathOperation {   MBL_MW_MATH_OP_ADD = 1 , MBL_MW_MATH_OP_MULTIPLY , MBL_MW_MATH_OP_DIVIDE , MBL_MW_MATH_OP_MODULUS ,   MBL_MW_MATH_OP_EXPONENT , MBL_MW_MATH_OP_SQRT , MBL_MW_MATH_OP_LSHIFT , MBL_MW_MATH_OP_RSHIFT ,   MBL_MW_MATH_OP_SUBTRACT , MBL_MW_MATH_OP_ABS_VALUE , MBL_MW_MATH_OP_CONSTANT }
	Available operations for the math processor. More...

Functions
METAWEAR_API int32_t	mbl_mw_dataprocessor_math_create (MblMwDataSignal *source, MblMwMathOperation op, float rhs, void *context, MblMwFnDataProcessor processor_created)
	Create a math processor where signed/unsigned operation is inferred. More...
METAWEAR_API int32_t	mbl_mw_dataprocessor_math_create_signed (MblMwDataSignal *source, MblMwMathOperation op, float rhs, void *context, MblMwFnDataProcessor processor_created)
	Create a math processor using signed operations. More...
METAWEAR_API int32_t	mbl_mw_dataprocessor_math_create_unsigned (MblMwDataSignal *source, MblMwMathOperation op, float rhs, void *context, MblMwFnDataProcessor processor_created)
	Create a math processor using unsigned operations. More...
METAWEAR_API int32_t	mbl_mw_dataprocessor_math_modify_rhs (MblMwDataProcessor *math, float rhs)
	Modify the configuration of a math processor, changing the right side value of the operation. More...
METAWEAR_API int32_t	mbl_mw_dataprocessor_math_modify_rhs_signal (MblMwDataProcessor *math, MblMwDataSignal *rhs_signal)
	Modify the configuration of a math processor for a feedback or feedforward loop. More...

Detailed Description

Performs arithmetic on sensor data.

Copyright

MbientLab License

Enumeration Type Documentation

MblMwMathOperation

enum MblMwMathOperation

Available operations for the math processor.

Enumerator
MBL_MW_MATH_OP_ADD	Computes input + rhs.
MBL_MW_MATH_OP_MULTIPLY	Computes input * rhs.
MBL_MW_MATH_OP_DIVIDE	Computes input / rhs.
MBL_MW_MATH_OP_MODULUS	Computes input % rhs.
MBL_MW_MATH_OP_EXPONENT	Computes input ^ rhs.
MBL_MW_MATH_OP_SQRT	Computes sqrt(input)
MBL_MW_MATH_OP_LSHIFT	Computes input << rhs.
MBL_MW_MATH_OP_RSHIFT	Computes input >> rhs.
MBL_MW_MATH_OP_SUBTRACT	Computes input - rhs.
MBL_MW_MATH_OP_ABS_VALUE	Computes |input|.
MBL_MW_MATH_OP_CONSTANT	Replaces input with rhs.

Function Documentation

mbl_mw_dataprocessor_math_create()

METAWEAR_API int32_t mbl_mw_dataprocessor_math_create	(	MblMwDataSignal *	source,
		MblMwMathOperation	op,
		float	rhs,
		void *	context,
		MblMwFnDataProcessor	processor_created
	)

Create a math processor where signed/unsigned operation is inferred.

Performs simple arithmetic on sensor data. See MblMwMathOperation for allowed ops. A pointer representing the processor will be passed back to the user via a callback function.

Parameters

source	Data signal providing the input for the processor
op	Math operation to compute
rhs	Right hand side of the operation that requires 2 inputs
context	Pointer to additional data for the callback function
processor_created	Callback function to be executed when the processor is created

mbl_mw_dataprocessor_math_create_signed()

METAWEAR_API int32_t mbl_mw_dataprocessor_math_create_signed	(	MblMwDataSignal *	source,
		MblMwMathOperation	op,
		float	rhs,
		void *	context,
		MblMwFnDataProcessor	processor_created
	)

Create a math processor using signed operations.

Performs simple arithmetic on sensor data. See MblMwMathOperation for allowed ops. A pointer representing the processor will be passed back to the user via a callback function.

Parameters

source	Data signal providing the input for the processor
op	Math operation to compute
rhs	Right hand side of the operation that requires 2 inputs
context	Pointer to additional data for the callback function
processor_created	Callback function to be executed when the processor is created

mbl_mw_dataprocessor_math_create_unsigned()

METAWEAR_API int32_t mbl_mw_dataprocessor_math_create_unsigned	(	MblMwDataSignal *	source,
		MblMwMathOperation	op,
		float	rhs,
		void *	context,
		MblMwFnDataProcessor	processor_created
	)

Create a math processor using unsigned operations.

Performs simple arithmetic on sensor data. See MblMwMathOperation for allowed ops. A pointer representing the processor will be passed back to the user via a callback function.

Parameters

source	Data signal providing the input for the processor
op	Math operation to compute
rhs	Right hand side of the operation that requires 2 inputs
context	Pointer to additional data for the callback function
processor_created	Callback function to be executed when the processor is created

mbl_mw_dataprocessor_math_modify_rhs()

METAWEAR_API int32_t mbl_mw_dataprocessor_math_modify_rhs	(	MblMwDataProcessor *	math,
		float	rhs
	)

Modify the configuration of a math processor, changing the right side value of the operation.

Parameters

math	Math processor to modify
rhs	New right hand side of the operation

Returns

MBL_MW_STATUS_OK if processor configuration was updated, MBL_MW_STATUS_WARNING_INVALID_PROCESSOR_TYPE if a non-math processor was passed in

mbl_mw_dataprocessor_math_modify_rhs_signal()

METAWEAR_API int32_t mbl_mw_dataprocessor_math_modify_rhs_signal	(	MblMwDataProcessor *	math,
		MblMwDataSignal *	rhs_signal
	)

Modify the configuration of a math processor for a feedback or feedforward loop.

Parameters

math	Math processor to modify
rhs_signal	Data signal supplying the rhs value of the operation

Returns

MBL_MW_STATUS_OK if processor configuration was updated, MBL_MW_STATUS_WARNING_INVALID_PROCESSOR_TYPE if a non-math processor was passed in