kc3-lang/gnulib/doc/posix-functions/sqrtl.texi

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• Hash : 7fd1d131
  Author :
  Date : 2012-03-14T01:51:10
  

  sqrtl: Bypass broken implementation in OpenBSD 5.1/SPARC.
  
  * lib/math.in.h (sqrtl): Replace it if REPLACE_SQRTL is 1.
  * m4/sqrtl.m4 (gl_FUNC_SQRTL_WORKS): New macro.
  (gl_FUNC_SQRTL): Invoke it. Set REPLACE_SQRTL to 1 if sqrtl() produces
  too big rounding errors.
  * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_SQRTL.
  * modules/math (Makefile.am): Substitute REPLACE_SQRTL.
  * modules/sqrtl (configure.ac): Consider REPLACE_SQRTL.
  (Depends-on): Update conditions.
  * tests/test-sqrtl.c (my_ldexpl): New function.
  (main): Add test of a particular value.
  * doc/posix-functions/sqrtl.texi: Mention the OpenBSD 5.1/SPARC bug.
  

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• doc/posix-functions/sqrtl.texi

• @node sqrtl
  @section @code{sqrtl}
  @findex sqrtl
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/sqrtl.html}
  
  Gnulib module: sqrtl
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, HP-UX 11, IRIX 6.5, Solaris 9, Cygwin, Interix 3.5, BeOS.
  @item
  This function is only defined as a macro with arguments on some platforms:
  MSVC 9.
  @item
  This function is not declared on some platforms:
  MacOS X 10.3.
  @item
  This function produces very imprecise results on some platforms:
  OpenBSD 5.1/SPARC.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @end itemize
  

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