kc3-lang/gnulib/m4/logp1l.m4

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• Hash : 3f8e0614
  Author :
  Date : 2024-07-29T13:38:46
  

  logp1l: New module.
  
  * lib/math.in.h (logp1l): New declaration.
  * lib/logp1l.c: New file.
  * m4/logp1l.m4: New file.
  * m4/math_h.m4 (gl_MATH_H): Test whether logp1l is declared.
  (gl_MATH_H_REQUIRE_DEFAULTS): Initialize GNULIB_LOGP1L.
  (gl_MATH_H_DEFAULTS): Initialize HAVE_LOGP1L.
  * modules/math (Makefile.am): Substitute GNULIB_LOGP1L, HAVE_LOGP1L.
  * modules/logp1l: New file.
  * doc/posix-functions/logp1l.texi: Mention the new module.
  

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• m4/logp1l.m4

• # logp1l.m4
  # serial 1
  dnl Copyright (C) 2024 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_FUNC_LOGP1L],
  [
    AC_REQUIRE([gl_MATH_H_DEFAULTS])
    AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
    AC_REQUIRE([gl_FUNC_LOGP1])
  
    dnl Persuade glibc <math.h> to declare logp1l().
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  
    dnl Test whether logp1l() exists. Assume that logp1l(), if it exists, is
    dnl defined in the same library as logp1().
    saved_LIBS="$LIBS"
    LIBS="$LIBS $LOGP1_LIBM"
    AC_CHECK_FUNCS([logp1l])
    LIBS="$saved_LIBS"
    if test $ac_cv_func_logp1l = yes; then
      LOGP1L_LIBM="$LOGP1_LIBM"
    else
      HAVE_LOGP1L=0
      dnl We implement logp1l through log1pl.
      AC_REQUIRE([gl_FUNC_LOG1PL])
      LOGP1L_LIBM="$LOG1PL_LIBM"
    fi
    AC_SUBST([LOGP1L_LIBM])
  ])
  

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