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Algorithm development for fixed-point data

`bitand` | Bitwise AND of two fi objects |

`bitor` | Bitwise OR of two fi objects |

`bitshift` | Shift bits specified number of places |

`cordicabs` | CORDIC-based absolute value |

`cordicangle` | CORDIC-based phase angle |

`cordicatan2` | CORDIC-based four quadrant inverse tangent |

`cordiccart2pol` | CORDIC-based approximation of Cartesian-to-polar conversion |

`cordiccexp` | CORDIC-based approximation of complex exponential |

`cordiccos` | CORDIC-based approximation of cosine |

`cordicpol2cart` | CORDIC-based approximation of polar-to-Cartesian conversion |

`cordicrotate` | Rotate input using CORDIC-based approximation |

`cordicsin` | CORDIC-based approximation of sine |

`cordicsincos` | CORDIC-based approximation of sine and cosine |

`cordicsqrt` | CORDIC-based approximation of square root |

**Develop Fixed-Point Algorithms**

Develop and verify a simple fixed-point algorithm.

**Calculate Fixed-Point Sine and Cosine**

This example shows how to use both CORDIC-based and lookup table-based algorithms provided by Fixed-Point Designer to approximate the MATLAB sine and cosine functions.

**Compute Sine and Cosine Using CORDIC Rotation Kernel**

This example shows how to compute sine and cosine using a CORDIC rotation kernel in MATLAB.

**Calculate Fixed-Point Arctangent**

This example shows how to use the CORDIC algorithm, polynomial approximation, and lookup table approaches to calculate the fixed-point, four quadrant inverse tangent.

**Perform QR Factorization Using CORDIC**

This example shows how to write MATLAB code that works for both floating-point and fixed-point data types. The algorithm used in this example is the QR factorization implemented via CORDIC.

**Compute Square Root Using CORDIC**

This example shows how to compute square root using a CORDIC kernel algorithm in MATLAB.

**Convert Cartesian to Polar Using CORDIC Vectoring Kernel**

This example shows how to convert Cartesian to polar coordinates using a CORDIC vectoring kernel algorithm in MATLAB.

**Normalize Data for Lookup Tables**

This example shows how to normalize data for use in lookup tables.

**Implement Fixed-Point Log2 Using Lookup Table**

This example shows how to implement fixed-point log2 using a lookup table. Lookup tables generate efficient code for embedded devices.

**Implement Fixed-Point Square Root Using Lookup Table**

This example shows how to implement fixed-point square root using a lookup table.

**Convert dsp.FIRFilter Object to Fixed-Point Using the Fixed-Point Converter App**

This example converts a `dsp.FIRFilter`

System
object™, which filters a high-frequency sinusoid signal, to fixed-point using the Fixed-Point Converter app.

**Fixed-Point Design Exploration in Parallel**

This example shows how to explore and test fixed-point designs by distributing tests across many computers in parallel.

Acquire real-time images from a webcam, process the images using fixed-point blob analysis, and determine world coordinates to score target practice using a laser pistol

**fimath for Rounding and Overflow Modes**

Gives an example that shows that the order in which you set overflow action and rounding method matters

**fimath for Sharing Arithmetic Rules**

Gives an example of using a `fimath`

object
to share modular arithmetic information among multiple `fi`

objects

**fimath ProductMode and SumMode**

Shows the differences among the different settings
of the `ProductMode`

and `SumMode`

properties

Describes which functions ignore or discard fimath

**System Objects Supported by Fixed-Point Converter App**

You can use the Fixed-Point Converter app to automatically propose and apply data types for commonly used system objects.

How to fix mismatched fimath errors

**fi Constructor Does Not Follow globalfimath Rules**

How to get the fi constructor to follow globalfimath rules

**Frequently Asked Questions About Fixed-Point Numbers**

A fraction length greater than the word length of a fixed-point number occurs when the number has an absolute value less than one and contains leading zeros.

**Why Does the Fixed-Point Converter App Not Propose Data Types for System Objects?**

How to troubleshoot missing data type proposals for System objects