search for: _fpu_setcw

...p://www-2.cs.cmu.edu/~quake/triangle.html to dyn.load into R. Uh oh. Floating point exceptions. Track it down to some FPU diddling that the author deems is necessary. Here's my minimal code that breaks: flipme.c: #include <fpu_control.h> void flipme(){ int cword; cword=4210; _FPU_SETCW(cword); printf("%f\n",sqrt(2.0)); } Compile with "R SHLIB flipme.c", then dyn.load and run: > dyn.load("flipme.so") > .C("flipme") Process R floating point exception at Mon Nov 18 17:41:50 2002 The debugger tells me its the printf line that...

Dear developers, is there (already) a platform-independent way for (temporarily!) changing the fpu control word? More precisely: I am looking for functions (accessible from C code in R packages) which read and write the fpu control word on x86 cpus (and cause no harm otherwise), because I need to (temporarily) turn off internal 80-bit precision for some algorithms relying on 64-bit IEEE

A program I'm running requires a patch to be installed, I successfully downloaded the source and applied the patch to the source. How do I compile this into a wine build I can use now? The documentation on the wiki doesn't help that much, I'm quite new to all this.