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authorRoland McGrath <roland@gnu.org>2004-11-04 23:37:44 +0000
committerRoland McGrath <roland@gnu.org>2004-11-04 23:37:44 +0000
commitad146de70ec85c70a680bb4817f1d9e9f3bc7fd6 (patch)
tree0db09f890793678db298012e476526fc6016b8da /sysdeps/x86_64
parent0090226a52e0b3263fad42e1569baa3204983bb5 (diff)
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* sysdeps/unix/sysv/linux/x86_64/sys/procfs.h [__WORDSIZE == 32]
	(elf_fpxregset_t): New type.
	(struct elf_prpsinfo): If __WORDSIZE == 32, change pr_[ug]id type
	to unsigned short int.
	* sysdeps/unix/sysv/linux/x86_64/sys/user.h
	(struct user_fpregs_struct): Fix comment.
	* sysdeps/i386/fpu/bits/mathdef.h (float_t, double_t): If
	__FLOAT_EVAL_METHOD__ is defined and 0, typedef to float resp. double.
	* sysdeps/x86_64/fpu/bits/mathdef.h: Include bits/wordsize.h.
	(float_t, double_t): If -m32 and not -mfpmath=sse, typedef to
	long double.
	* sysdeps/x86_64/fpu/bits/fenv.h: Include bits/wordsize.h.
	(fenv_t): Remove __mxcsr field for -m32.
Diffstat (limited to 'sysdeps/x86_64')
-rw-r--r--sysdeps/x86_64/fpu/bits/fenv.h6
-rw-r--r--sysdeps/x86_64/fpu/bits/mathdef.h14
2 files changed, 18 insertions, 2 deletions
diff --git a/sysdeps/x86_64/fpu/bits/fenv.h b/sysdeps/x86_64/fpu/bits/fenv.h
index 04576933f5..11859f00c8 100644
--- a/sysdeps/x86_64/fpu/bits/fenv.h
+++ b/sysdeps/x86_64/fpu/bits/fenv.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997,1998,1999,2000,2001 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,1999,2000,2001,2004 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
@@ -20,6 +20,8 @@
 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
 #endif
 
+#include <bits/wordsize.h>
+
 
 /* Define bits representing the exception.  We use the bit positions
    of the appropriate bits in the FPU control word.  */
@@ -80,7 +82,9 @@ typedef struct
     unsigned int __data_offset;
     unsigned short int __data_selector;
     unsigned short int __unused5;
+#if __WORDSIZE == 64
     unsigned int __mxcsr;
+#endif
   }
 fenv_t;
 
diff --git a/sysdeps/x86_64/fpu/bits/mathdef.h b/sysdeps/x86_64/fpu/bits/mathdef.h
index 37665c2097..7b16189590 100644
--- a/sysdeps/x86_64/fpu/bits/mathdef.h
+++ b/sysdeps/x86_64/fpu/bits/mathdef.h
@@ -23,11 +23,23 @@
 #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
 # define _MATH_H_MATHDEF	1
 
+# include <bits/wordsize.h>
+
+# if __WORDSIZE == 64 || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0)
 /* The x86-64 architecture computes values with the precission of the
-   used type.  */
+   used type.  Similarly for -m32 -mfpmath=sse.  */
 typedef float float_t;		/* `float' expressions are evaluated as `float'.  */
 typedef double double_t;	/* `double' expressions are evaluated
 				   as `double'.  */
+# else
+/* The ix87 FPUs evaluate all values in the 80 bit floating-point format
+   which is also available for the user as `long double'.  Therefore we
+   define:  */
+typedef long double float_t;	/* `float' expressions are evaluated as
+				   `long double'.  */
+typedef long double double_t;	/* `double' expressions are evaluated as
+				   `long double'.  */
+# endif
 
 /* The values returned by `ilogb' for 0 and NaN respectively.  */
 # define FP_ILOGB0	(-2147483647 - 1)