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Protect definitions for math.h against double inclusion.

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This commit is contained in:
Ulrich Drepper 1999-12-29 03:03:42 +00:00
parent eb050c4c89
commit fa0483faf6
1 changed files with 5 additions and 3 deletions
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8
sysdeps/generic/bits/mathdef.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -20,7 +20,9 @@
# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
#endif
#if defined __USE_ISOC9X && defined _MATH_H
#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
# define _MATH_H_MATHDEF 1
/* Normally, there is no long double type and the `float' and `double'
expressions are evaluated as `double'. */
typedef double float_t; /* `float' expressions are evaluated as
@ -42,7 +44,7 @@ typedef double double_t; /* `double' expressions are evaluated as
/* Number of decimal digits for the `double' type. */
# define DECIMAL_DIG 15
#endif /* ISO C 9X */
#endif /* ISO C99 */
#ifndef __NO_LONG_DOUBLE_MATH
/* Signal that we do not really have a `long double'. The disables the