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R2012a Documentation → Embedded Coder
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Contents

Index

• Getting Started

• User's Guide

• AUTOSAR Client-Server Communication

• Configuration Wizards

• Embedded Targets (embeddedtargetslib)

• Host Communication

• Target Preferences

• Embedded Linux

• Analog Devices Blackfin

• Analog Devices SHARC

• Analog Devices TigerSHARC

• Freescale MPC74xx

• Texas Instruments C2000

• Texas Instruments C5000

• Texas Instruments C6000

• AVNET S3ADSP DM6437 (avnet_s3adsp_dm6437)

• C6416 DSK (c6416dsklib)

• C6455 EVM (c6455evmlib)

• C6713 DSK (c6713dsklib)

• C6747 EVM (c6747evmlib)

• DM642 EVM (dm642evmlib)

• DM6437 EVM (dm6437evmlib)

• DM648 EVM (dm648evmlib)

• DSP/BIOS (dspbioslib)

• Memory Operations

• Optimization — C62x DSP Library (tic62dsplib)

• Optimization — C64x DSP Library (tic64dsplib)

• Target Communication (targetcommlib)

• Wind River VxWorks

• Module Packaging

• Release Notes

C64x Reciprocal - Fraction and exponent of reciprocal of real input signal

Library

Embedded Coder/ Embedded Targets/ Processors/ Texas Instruments C6000/ Optimization/ C64x DSP Library

Description

The C64x Reciprocal block computes the fractional (F) and exponential (E) portions of the reciprocal of a real Q.15 input, such that the reciprocal of the input is F*(2^E). The fraction is Q.15 and the exponent is a 16-bit signed integer.

The Reciprocal block supports both continuous and discrete sample times. This block supports little-endian code generation only.

Dialog Box

Algorithm

In simulation, the Reciprocal block is equivalent to the TMS320C64x DSP Library assembly code function DSP_recip16. During code generation, this block calls the DSP_recip16 routine to produce optimized code.

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