I know that x87 has higher internal precision, which is probably the biggest difference that people see between it and SSE operations. But I have to wonder, is there any other benefit to using x87? I have a habit of typing -mfpmath=sse automatically in any project, and I wonder if I'm missing anything else that the x87 FPU offers. ...
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 signaling NaN would allow me to catch a floating point exception in the cases where I don't want to proceed with "missing values." Converse...
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, the article author goes on to quote: Intel started discouraging the use of x87 with the introduction of the P4 in late 2000. AMD deprecate...
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 Windows drivers)[1] If that's the case, what instructions should I be using? I saw something about SSE, but unless I'm mistaken, those inst...
Here is my short assembly program: ; This code has been generated by the 7Basic ; compiler <http://launchpad.net/7basic> extern printf ; Initialized data SECTION .data f_0 dd 5.5 printf_f: db "%f",10,0 SECTION .text ; Code global main main: push ebp mov ebp,esp push dword [f_0] push printf_f call printf add esp,8...