mydefs.h File Reference

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Macros
#define	ABS(x)
	Compute the absolute value of x without using math.h.
#define	PRIf_02   "%d.%02d"
	printf format string for printing a float/double as integer with 2 decimal places. Use together with PRIf_02D to avoid floating-point printf on embedded targets.
#define	PRIf_02D(fData)
	Expands to integer and fractional arguments for use with PRIf_02. Splits a float/double into the integer part and the two-digit fractional part.
#define	CLAMP(val, minVal, maxVal)
	Clamp val to the closed interval [minVal, maxVal]. All three arguments are evaluated exactly once via temporary variables, avoiding double-evaluation side effects. Uses a GCC statement expression.
#define	INX_GET(nInx, nMax)
	The circular index GET - for circular queue both direction Example usage:
#define	COUNT_OF(array)
	the macro for getting items count array

Macro Definition Documentation

ABS

#define ABS

(

x

)

Value:

(((x) >= 0) ? (x) : -(x))

Compute the absolute value of x without using math.h.

Parameters

x	Any numeric expression

Returns

Non-negative value of x

Definition at line 18 of file mydefs.h.

CLAMP

#define CLAMP	(		val,
			minVal,
			maxVal )

Value:

    __extension__({ \
    __typeof__(val)    _v   = (val);    \
    __typeof__(minVal) _min = (minVal); \
    __typeof__(maxVal) _max = (maxVal); \
    _v < _min ? _min : (_v > _max ? _max : _v); \
})

Clamp val to the closed interval [minVal, maxVal]. All three arguments are evaluated exactly once via temporary variables, avoiding double-evaluation side effects. Uses a GCC statement expression.

Parameters

val	The value to clamp
minVal	Lower bound (inclusive)
maxVal	Upper bound (inclusive)

Returns

val if it is within [minVal, maxVal], minVal if val < minVal, or maxVal if val > maxVal

Definition at line 50 of file mydefs.h.

Referenced by mems_ReadMainBlock(), sensorsBase_CheckCRCMeasureNFC(), and systemParams_Correction().

COUNT_OF

#define COUNT_OF

(

array

)

Value:

(sizeof(array) / sizeof(array[0]))

the macro for getting items count array

Definition at line 70 of file mydefs.h.

Referenced by systemParams_Log(), and systemParamsRef_Get().

INX_GET

#define INX_GET	(		nInx,
			nMax )

Value:

(((nInx)>=0)?((nInx)%(nMax)):((nMax)-((-(nInx))%(nMax))))

The circular index GET - for circular queue both direction
Example usage:

inx = INX_GET(inx+1, maxRange);
inx = INX_GET(inx-11, maxRange);

Definition at line 65 of file mydefs.h.

Referenced by mems_SetOffset(), and nfc_WriteMeasureData().

PRIf_02

#define PRIf_02   "%d.%02d"

printf format string for printing a float/double as integer with 2 decimal places. Use together with PRIf_02D to avoid floating-point printf on embedded targets.

Example:

float val = 3.14f;
printf("Value: " PRIf_02 "\n", PRIf_02D(val));  // prints "Value: 3.14"

Definition at line 30 of file mydefs.h.

Referenced by bar_bmp585_LogData(), sensors_CayennelFromBckData(), and tmphm_sht45_LogData().

PRIf_02D

#define PRIf_02D

(

fData

)

Value:

(int)fData, ABS(((int)(fData * 100.0f) % 100))

Expands to integer and fractional arguments for use with PRIf_02. Splits a float/double into the integer part and the two-digit fractional part.

Parameters

fData

The float or double value to format

Returns

Two comma-separated integer arguments: integer part and abs(fractional * 100)

Definition at line 38 of file mydefs.h.

Referenced by bar_bmp585_LogData(), sensors_CayennelFromBckData(), and tmphm_sht45_LogData().