kc3-lang/gnulib/modules/logb

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• Hash : 77e40838
  Author :
  Date : 2012-04-03T02:51:42
  

  logb: Provide replacement and workarounds.
  
  * lib/math.in.h (logb): Ensure declaration. Replace if REPLACE_LOGB
  is 1.
  * lib/logb.c: New file.
  * m4/logb.m4 (gl_FUNC_LOGB_WORKS): New macro.
  (gl_FUNC_LOGB): Invoke it. Set HAVE_LOGB, REPLACE_LOGB.
  * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_LOGB.
  * modules/math (Makefile.am): Substitute REPLACE_LOGB.
  * modules/logb (Files): Add lib/logb.c.
  (Depends-on): Add isfinite, frexp, isnand.
  (configure.ac): Compile the replacement code logb.c if needed.
  * tests/test-math-c++.cc: Check the declaration of logb.
  * doc/posix-functions/logb.texi: Mention the replacement and the bug
  with subnormal numbers.
  

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• modules/logb

• Description:
  logb() function: get exponent.
  
  Files:
  lib/logb.c
  m4/logb.m4
  m4/mathfunc.m4
  
  Depends-on:
  math
  extensions
  isfinite        [test $HAVE_LOGB = 0 || test $REPLACE_LOGB = 1]
  frexp           [test $HAVE_LOGB = 0 || test $REPLACE_LOGB = 1]
  isnand          [test $HAVE_LOGB = 0 || test $REPLACE_LOGB = 1]
  
  configure.ac:
  gl_FUNC_LOGB
  if test $HAVE_LOGB = 0 || test $REPLACE_LOGB = 1; then
    AC_LIBOBJ([logb])
  fi
  gl_MATH_MODULE_INDICATOR([logb])
  
  Makefile.am:
  
  Include:
  <math.h>
  
  Link:
  $(LOGB_LIBM)
  
  License:
  LGPL
  
  Maintainer:
  Bruno Haible
  

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