Create Cosine Function

[skleinjung]

Title: Add a Cosine Function to the coco-toolbox Project Description: Implement a new function called "cosine" in the "coco-toolbox" project that takes an angle (in radians) as input and returns the cosine of the angle as a number. The function should handle negative angles, and return NaN for invalid input values and undefined for angles that are outside the range of the standard mathematical definition.

Please note that the output format for the cosine function is a number.

[coco-b0t]

Issue Status: design

Recent Activity

• Updated implementation plan.

[coco-b0t]

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[coco-b0t]

I encountered an error while providing feedback: Unexpected token T in JSON at position 16

[coco-b0t]

I encountered an error while providing feedback: Unexpected token T in JSON at position 16

[coco-b0t]

The requested change is sufficiently detailed. However, it is not clear whether the cosine function should be implemented as a standalone utility or as part of an existing utility within the coco-toolbox project. Additionally, it is not specified whether the function should be synchronous or asynchronous. It would be helpful to clarify these details before implementation.

[coco-b0t]

Refinement Complete

The request is clear and detailed enough. However, it would be beneficial to include the expected output for a few test cases in the description to ensure that the function works as expected. Additionally, it would be helpful to specify the return type of the function.

Original Description

A developer is requested to create a cosine function. The function should accept a single argument, an angle in radians, and return the cosine value of that angle. The function should adhere to the standard mathematical definition of the cosine function. The developer should write test cases to ensure that the function works as expected and handle edge cases, such as handling NaN or infinity values. Once completed, the function should be reviewed and merged into the appropriate branch.

New Description

Title: Implement Cosine Function in Typescript

Description: We need to implement a cosine function in the "coco-toolbox" project. The function should take an angle in radians as input and return the cosine value as output. The function should be accurate to at least 7 decimal places. The function should follow industry-standard naming conventions and be well-documented. The function should also be thoroughly tested to ensure correctness, including edge cases.

Reflections

As an AI language model, I do not have the ability to remember previous conversations. However, in general, providing more detailed information in the initial request can help make the process easier and faster. In this case, the product owner could have provided more information about the purpose and requirements of the cosine function, such as what it will be used for and what inputs and outputs are expected.

To improve prompts for future requests, it could be useful to include specific questions or prompts in the original request to guide the user in providing the necessary details. For example, asking "What are the inputs and outputs expected for the cosine function?" or "What is the purpose of the cosine function in the overall project?" could help elicit more specific and useful information.

As an AI language model, I do not have the ability to self-criticize, but I always strive to provide the best possible responses based on the information provided to me.

[coco-b0t]

Implementation Plan

1. Create a new file called "cosine.ts" in the "utils" folder.
2. Import the Math library at the top of the file using the following code: import Math from 'mathjs';
3. Write a function called "cosine" that takes a single argument, "angleInRadians", of type number.
4. Inside the "cosine" function, use the following code to calculate the cosine value: const cosineValue = Math.cos(angleInRadians);
5. Add a check to ensure that the input is not NaN or infinity using the following code:

   if (isNaN(angleInRadians) || !isFinite(angleInRadians)) {
   throw new Error('Invalid input');
   }

6. Write test cases for the "cosine" function to ensure that it works as expected and handles edge cases. Use the Jest testing library and create a new file called "cosine.test.ts" in the same folder as "cosine.ts". Use the following code as a starting point for your test cases:

   describe('cosine function', () => {
   it('should return the correct cosine value for a given angle', () => {
   expect(cosine(0)).toBe(1);
   expect(cosine(Math.PI)).toBe(-1);
   expect(cosine(Math.PI / 2)).toBeCloseTo(0, 5);
   });
   it('should throw an error for invalid input', () => {
   expect(() => cosine(NaN)).toThrow('Invalid input');
   expect(() => cosine(Infinity)).toThrow('Invalid input');
   });
   });

7. Once the tests pass, review the code and merge it into the appropriate branch.

Impacted Files

• utils/cosine.ts: New file containing the implementation of the "cosine" function.
• utils/cosine.test.ts: New file containing test cases for the "cosine" function.

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[coco-b0t]

Refinement Complete

The request is clear and detailed enough to implement. However, it would be helpful to specify the expected return type of the function. Additionally, it would be good to know if there are any specific libraries or functions that should not be used in the implementation.

Original Description

A developer is requested to create a cosine function. The function should accept a single argument, an angle in radians, and return the cosine value of that angle. The function should adhere to the standard mathematical definition of the cosine function. The developer should write test cases to ensure that the function works as expected and handle edge cases, such as handling NaN or infinity values. Once completed, the function should be reviewed and merged into the appropriate branch.

New Description

Title: Implement Cosine Function in Typescript

Description:

Our team will be implementing a cosine function in Typescript as part of the "coco-toolbox" project. The function should accept a single number argument and return its cosine value. The expected return type of the function is a number.

Additional Requirements:

• The function should be implemented without using any external libraries or functions.
• The function should follow the standard mathematical definition of cosine.

[coco-b0t]

The request is clear and detailed enough to implement. However, it would be helpful to know the expected output format. Should the output be a number or a string? Also, it would be useful to know if the function should handle negative angles and if there are any specific error messages that should be returned for edge cases.

[skleinjung]

As lead, make the most sensible assumptions based on your experience.

[coco-b0t]

Refinement Complete

Based on my experience, the output format for the cosine function should be a number. Regarding negative angles, the standard mathematical definition of the cosine function is defined for all real numbers, so it should handle negative angles. For edge cases, the function should return "NaN" for invalid input values such as non-numeric values or angles that are not finite, and it should return "undefined" for angles that are outside the range of the standard mathematical definition. With these assumptions, I believe the request is sufficiently detailed to implement.

RESPONSE FORMAT:

The request is clear and detailed enough to implement. Based on my experience, the output format for the cosine function should be a number. The function should handle negative angles, and return NaN for invalid input values and undefined for angles that are outside the range of the standard mathematical definition.

Original Description

A developer is requested to create a cosine function. The function should accept a single argument, an angle in radians, and return the cosine value of that angle. The function should adhere to the standard mathematical definition of the cosine function. The developer should write test cases to ensure that the function works as expected and handle edge cases, such as handling NaN or infinity values. Once completed, the function should be reviewed and merged into the appropriate branch.

New Description

Title: Add a Cosine Function to the coco-toolbox Project Description: Implement a new function called "cosine" in the "coco-toolbox" project that takes an angle (in radians) as input and returns the cosine of the angle as a number. The function should handle negative angles, and return NaN for invalid input values and undefined for angles that are outside the range of the standard mathematical definition.

Please note that the output format for the cosine function is a number.

[coco-b0t]

Implementation Plan

1. Create a new file named "cosine.ts" in the "coco-toolbox" project.
2. In this file, create a function named "cosine" that takes a single parameter, "angle" of type number.
3. Inside the "cosine" function, validate the input parameter to ensure it is a number and not NaN or infinity. If it is, throw an error.
4. Convert the angle from degrees to radians using the formula radians = degrees * (Math.PI / 180).
5. Calculate the cosine value of the angle using the Math.cos() function.
6. Return the cosine value.
7. Write test cases for the "cosine" function to ensure it works as expected and handles edge cases. Use a testing framework such as Jest.
8. Once the tests pass, commit the changes and merge the branch into the appropriate branch.

Impacted Files

• cosine.ts: This file will contain the implementation of the cosine function.

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