kc3-lang/gnulib/m4/ieee754-h.m4

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• Hash : 80d1e862
  Author :
  Date : 2018-08-01T16:08:26
  

  ieee754-h: new module
  
  It looks like Emacs can use this for some NaN processing.
  Emacs uses it only on double NaNs so it should be safe.
  * MODULES.html.sh (func_all_modules): Add ieee754-h.
  * config/srclist.txt: Mention ieee754.h in a comment.
  * doc/glibc-headers/ieee754.texi (ieee754.h):
  Gnulib now has a substitute that should work
  except for long double and for non-IEEE platforms.
  * lib/ieee754.in.h, m4/ieee754-h.m4, modules/ieee754-h:
  * modules/ieee754-h-tests, tests/test-ieee754-h.c: New files.
  

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• m4/ieee754-h.m4

• # Configure ieee754-h module
  
  dnl Copyright 2018 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_IEEE754_H],
  [
    AC_REQUIRE([AC_C_BIGENDIAN])
    AC_CHECK_HEADERS_ONCE([ieee754.h])
    if test $ac_cv_header_ieee754_h = yes; then
      IEEE754_H=
    else
      IEEE754_H=ieee754.h
      AC_DEFINE([_GL_REPLACE_IEEE754_H], 1,
                [Define to 1 if <ieee754.h> is missing.])
    fi
    AC_SUBST([IEEE754_H])
    AM_CONDITIONAL([GL_GENERATE_IEEE754_H], [test -n "$IEEE754_H"])
  ])
  

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