On Sun, Mar 04, 2012, Tijl Coosemans wrote: > Log: > Copy amd64 float.h to x86 and merge with i386 float.h. Replace > amd64/i386/pc98 float.h with stubs. [...] > --- head/sys/amd64/include/float.h Sun Mar 4 12:52:48 2012 > (r232490, copy source) > +++ head/sys/x86/include/float.h Sun Mar 4 14:00:32 2012 > (r232491) > @@ -42,7 +42,11 @@ __END_DECLS > #define FLT_RADIX 2 /* b */ > #define FLT_ROUNDS __flt_rounds() > #if __ISO_C_VISIBLE >= 1999 > +#ifdef _LP64 > #define FLT_EVAL_METHOD 0 /* no promotions */ > +#else > +#define FLT_EVAL_METHOD (-1) /* i387 semantics > are...interesting */ > +#endif > #define DECIMAL_DIG 21 /* max precision in decimal > digits */ > #endif
The implication of this code is that FLT_EVAL_METHOD depends on the size of a long, which it does not. Instead, it depends on whether SSE2 support is guaranteed to be present. If anything, the test should be something like #ifndef __i386__. By the way, the #defines for single- and double-precision are effectively MI and should be in, e.g., ieee754_float.h. I can send some old patches to that effect if someone wants to clean them up and commit them. _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
