x87

相关标签：javascript jquery android 多少钱 iPhone

x87 FPOP and FCOM instructions - how do these work?

I\'ve been tasked with writing a simple application in mixed C/ASM that has to use math co开发者_Go百科processor.[详细]

2023-03-30 15:28 分类：问答
80-bit floating point and subnormal numbers

I am trying to convert an 80-bit extended precision floating point number (in a buffer) to double. The buffer basically contains the content of an x87 register.[详细]

2023-03-26 13:59 分类：问答
How do you get maximal speed out of SSE?

What are the best settings for stuff like MXCSR? Which rounding mod开发者_运维技巧e is fastest? On what processors? Is it faster to enable signalling NaNs so I get informed when a computation results[详细]

2023-03-24 04:23 分类：问答
Basic FPU instructions/stack overview?

I\'m trying to get a basic understanding of floating point operations on x86. I understand that we have a dedicated FPU wit开发者_如何学Goh a stack, but I\'m not finding much relevant information on h[详细]

2023-03-21 23:34 分类：问答
Why is this simple program outputting so many characters?

Here is my short assem开发者_开发技巧bly program: ; This code has been generated by the 7Basic ; compiler <http://launchpad.net/7basic>[详细]

2023-01-16 07:12 分类：问答
What instructions should I be using for floating point operations?

I\'m somewhat familiar with the x87 instructions for manipulating floating point numbers in x86 assembly. However, I read somewhere that these were seldom used anymore. (And weren\'t allowed in 64-bit[详细]

2023-01-15 13:44 分类：问答
Extended (80-bit) double floating point in x87, not SSE2 - we don't miss it?

I was reading today about researchers discovering that NVidia\'s Phys-X libraries use x87 FP vs. SSE2. Obviously this will be suboptimal for parallel datasets where speed trumps precision. However, th[详细]

2023-01-06 07:07 分类：问答
Usefulness of signaling NaN?

I\'ve recently read up quite a bit on IEEE 754 and the x87 architecture.I was thinking of using NaN as a \"missing value\" in some numeric calculation code I\'m working on, and I was hoping that using[详细]

2022-12-20 02:24 分类：问答