Reciprocal Approximation with 1 Subtraction
7 by mbitsnbites | 3 comments on Hacker News.
Today's find: You can get a floating-point approximation of 1/x that's accurate to 3 bits with a single integer subtraction instruction. float fast_reciprocal(float x) { unsigned i = *(unsigned *) &x; i = 0x7effffffU - i; return *(float *) &i; } The magic number 0x7effffff accomplishes two things: 1) The exponent is calculated as 253-e, which effectively negates the exponent and subtracts 1. 2) The mantissa is approximated as a 1st order polynomial in the interval [1, 2). Interesting, but perhaps not very useful (as most CPU:s have more accurate reciprocal approximations these days).
Tuesday, 31 December 2024
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New top story on Hacker News: Show HN: Shop Clothes with Models That Match Your Body Shape
Show HN: Shop Clothes with Models That Match Your Body Shape
4 by Deekshana_Reddy | 1 comments on Hacker News.
This is one of those fix a problem you can’t ignore projects. Like most online shoppers, I often found myself frustrated: clothes look great on models but disappoint when I try them on. It’s not the clothes, it’s the body shape mismatch. So, I spent the last few months building TheBodyMatch, a platform where clothes are showcased on models who share your body shape. You get a more relatable and confident shopping experience because seeing is believing, especially when the model reflects you. It’s still early days. Think of this as a beta where feedback is gold. I’d love for you to try it out here: www.thebodymatch.com and share your thoughts. Is this the future of online fashion? I hope so.
4 by Deekshana_Reddy | 1 comments on Hacker News.
This is one of those fix a problem you can’t ignore projects. Like most online shoppers, I often found myself frustrated: clothes look great on models but disappoint when I try them on. It’s not the clothes, it’s the body shape mismatch. So, I spent the last few months building TheBodyMatch, a platform where clothes are showcased on models who share your body shape. You get a more relatable and confident shopping experience because seeing is believing, especially when the model reflects you. It’s still early days. Think of this as a beta where feedback is gold. I’d love for you to try it out here: www.thebodymatch.com and share your thoughts. Is this the future of online fashion? I hope so.
Saturday, 14 December 2024
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New top story on Hacker News: Show HN: Powerdrill – Leverage LLMs to Simplify Data Analysis
Show HN: Powerdrill – Leverage LLMs to Simplify Data Analysis
9 by joywong | 1 comments on Hacker News.
Powerdrill is an AI tool that enables users to chat with their data to get anything they want to know from their data. It's designed for individuals who need to work with data regularly but have limited data analysis skills. Users only need to input their questions. Then Powerdrill understands user queries, generates Python or SQL code, executes it, and provides answers with valuable insights and visualized data. Powerdrill supports various types of data, including PDFs, Word documents, Excel sheets, TSV files, and databases. It also offers data agents that save users time on repetitive tasks, such as generating reports and presentations with a single click.
9 by joywong | 1 comments on Hacker News.
Powerdrill is an AI tool that enables users to chat with their data to get anything they want to know from their data. It's designed for individuals who need to work with data regularly but have limited data analysis skills. Users only need to input their questions. Then Powerdrill understands user queries, generates Python or SQL code, executes it, and provides answers with valuable insights and visualized data. Powerdrill supports various types of data, including PDFs, Word documents, Excel sheets, TSV files, and databases. It also offers data agents that save users time on repetitive tasks, such as generating reports and presentations with a single click.
Tuesday, 10 December 2024
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New top story on Hacker News: Show HN: Run10K Trainer – Personalized Training Running Plans for Your 10K Race
Show HN: Run10K Trainer – Personalized Training Running Plans for Your 10K Race
3 by alexdevcodes | 0 comments on Hacker News.
Hi HN! I’m a professional runner and programmer, and I built *Run10K Trainer*, the app I wish I had when I started training. It’s a web and mobile app that generates personalized plans for 10K races, tailored to your schedule, experience level, and race date. After months of development, I’d love your feedback to help make it even better for runners everywhere. Does this sound like something you’d use?
3 by alexdevcodes | 0 comments on Hacker News.
Hi HN! I’m a professional runner and programmer, and I built *Run10K Trainer*, the app I wish I had when I started training. It’s a web and mobile app that generates personalized plans for 10K races, tailored to your schedule, experience level, and race date. After months of development, I’d love your feedback to help make it even better for runners everywhere. Does this sound like something you’d use?
Saturday, 7 December 2024
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