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Embedded Software and Motor Control Libraries for PXR40xx

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Function MLIB_ShL_F32<br />

4.169 Function MLIB_ShL_F32<br />

This function shifts the first parameter to left by number defined by second parameter.<br />

4.169.1 Declaration<br />

tFrac32 MLIB_ShL_F32(register tFrac32 f32In1, register tU16 u16In2);<br />

4.169.2 Arguments<br />

Table 4-206. MLIB_ShL_F32 arguments<br />

Type Name Direction Description<br />

register tFrac32 f32In1 input First value to be left shift.<br />

register tU16 u16In2 input The shift amount value.<br />

4.169.3 Return<br />

32-bit fractional value shifted to left by the shift amount. The bits beyond the 32-bit<br />

boundary are discarded.<br />

4.169.4 Description<br />

This function shifts the first argument to left by number defined by second argument.<br />

Overflow is not detected.<br />

Note<br />

The shift amount cannot exceed in magnitude the bit-width of<br />

the shift value, that means must be within the range 0...31.<br />

Otherwise the result of the function is undefined. Due to<br />

effectivity reason this function is implemented as inline <strong>and</strong><br />

thus is not ANSI-C compliant.<br />

4.169.5 Re-entrancy<br />

The function is re-entrant.<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 />

652 Freescale Semiconductor, Inc.

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