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If I add this small patch for mathinline: Index: sysdeps/i386/fpu/bits/mathinline.h =================================================================== RCS file: /cvs/glibc/libc/sysdeps/i386/fpu/bits/mathinline.h,v retrieving revision 1.39 diff -u -r1.39 mathinline.h --- mathinline.h 2000/05/06 07:46:06 1.39 +++ mathinline.h 2000/05/16 09:27:50 @@ -494,8 +494,10 @@ __inline_mathop_declNP (log, "fldln2; fxch; fyl2x", "0" (__x) : "st(1)") __inline_mathop_declNP (log10, "fldlg2; fxch; fyl2x", "0" (__x) : "st(1)") +#ifdef __FAST_MATH__ __inline_mathcodeNP (asin, __x, return __atan2l (__x, __sqrtl (1.0 - __x * __x))) __inline_mathcodeNP (acos, __x, return __atan2l (__sqrtl (1.0 - __x * __x), __x)) +#endif __inline_mathcode_ (long double, __sgn1l, __x, \ union { long double __xld; unsigned int __xi[3]; } __n = { __xld: __x }; \ =================================================================== I get a segementation fault when running the testsuite. For example I get for test-idouble -v3: [...] Test: acos (0) == pi/2 Result: is: 1.57079632679489655800e+00 0x1.921fb54442d1800000000000000000000p+0 Segmentation fault This happens with gcc 2.95.2 - it doesn't happen with the current gcc 2.96 CVS version. So what's the right thing to do? We do want to add some more __FAST_MATH__ #ifdefs to mathinline.h but adding more leads to segmentation faults in the testsuite (and therefore most probably also in user space programs). What should we do? Require gcc 2.96 for a correct compilation? Or ignore fast-math for now? I'd appreciate if somebody else could look into this. Thanks, Andreas -- Andreas Jaeger SuSE Labs aj@suse.de private aj@arthur.inka.de
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