cvs commit: src/lib/msun/i387 invtrig.c src/lib/msun/ld80 invtrig.h src/lib/msun/src e_acosl.c e_atan2l.c

[David Schultz]

das         2008-08-02 03:56:22 UTC

  FreeBSD src repository

  Modified files:
    lib/msun/ld80        invtrig.h 
    lib/msun/src         e_acosl.c e_atan2l.c 
  Added files:
    lib/msun/i387        invtrig.c 
  Log:
  SVN rev 181152 on 2008-08-02 03:56:22Z by das
  
  On i386, gcc truncates long double constants to double precision
  at compile time regardless of the dynamic precision, and there's
  no way to disable this misfeature at compile time. Hence, it's
  impossible to generate the appropriate tables of constants for the
  long double inverse trig functions in a straightforward way on i386;
  this change hacks around the problem by encoding the underlying bits
  in the table.
  
  Note that these functions won't pass the regression test on i386,
  even with the FPU set to extended precision, because the regression
  test is similarly damaged by gcc. However, the tests all pass when
  compiled with a modified version of gcc.
  
  Reported by:    bde
  
  Revision  Changes    Path
  1.1       +86 -0     src/lib/msun/i387/invtrig.c (new)
  1.2       +17 -4     src/lib/msun/ld80/invtrig.h
  1.2       +12 -2     src/lib/msun/src/e_acosl.c
  1.2       +12 -2     src/lib/msun/src/e_atan2l.c