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Embedded Software and Motor Control Libraries for PXR40xx

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Function MLIB_Abs_F32<br />

4.115 Function MLIB_Abs_F32<br />

This function returns absolute value of input parameter.<br />

4.115.1 Declaration<br />

tFrac32 MLIB_Abs_F32(register tFrac32 f32In);<br />

4.115.2 Arguments<br />

Table 4-152. MLIB_Abs_F32 arguments<br />

Type Name Direction Description<br />

register tFrac32 f32In input Input value.<br />

register tFrac32 f32In input Input value<br />

4.115.3 Return<br />

Absolute value of input parameter.Absolute value of input parameter<br />

4.115.4 Description<br />

This inline function returns the absolute value of input parameter. The input value as well<br />

as output value is considered as 32-bit fractional data type. The output saturation is not<br />

implemented in this function, thus in case the absolute value of input parameter is outside<br />

the (-1, 1) interval, the output value will overflow without any detection.<br />

The output of the function is defined by the following simple equation:<br />

Equation MLIB_Abs_Eq1<br />

This inline function returns the absolute value of input parameter. The input value as well<br />

as output value is considered as 32-bit fractional data type. The output saturation is not<br />

implemented in this function, thus in case the absolute value of input parameter is outside<br />

the (-1, 1) interval, the output value will overflow without any detection.<br />

<strong>Embedded</strong> <strong>Software</strong> <strong>and</strong> <strong>Motor</strong> <strong>Control</strong> <strong>Libraries</strong> <strong>for</strong> <strong>PXR40xx</strong>, Rev. 1.0<br />

542 Freescale Semiconductor, Inc.

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