[BZ #376]

Update.
	* sysdeps/generic/s_fdim.c: Handle +inf/+inf
	* sysdeps/generic/s_fdimf.c: Likewise.
	* sysdeps/generic/s_fdiml.c: Likewise.
	* sysdeps/i386/i686/fpu/s_fdim.S: Likewise.
	* sysdeps/i386/i686/fpu/s_fdimf.S: Likewise.
	* sysdeps/i386/i686/fpu/s_fdiml.S: Likewise.
	* sysdeps/powerpc/fpu/s_fdim.c: Likewise.
	* sysdeps/powerpc/fpu/s_fdimf.c: Likewise.
	* sysdeps/x86_64/fpu/s_fdiml.S: Likewise.
	* math/libm-test.inc (fdim_test): Add test case.  [BZ #376].

diff --git a/ChangeLog b/ChangeLog
index f938714..91a59da 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2004-09-26  Ulrich Drepper  <drepper@redhat.com>
 
+       * sysdeps/generic/s_fdim.c: Handle +inf/+inf
+       * sysdeps/generic/s_fdimf.c: Likewise.
+       * sysdeps/generic/s_fdiml.c: Likewise.
+       * sysdeps/i386/i686/fpu/s_fdim.S: Likewise.
+       * sysdeps/i386/i686/fpu/s_fdimf.S: Likewise.
+       * sysdeps/i386/i686/fpu/s_fdiml.S: Likewise.
+       * sysdeps/powerpc/fpu/s_fdim.c: Likewise.
+       * sysdeps/powerpc/fpu/s_fdimf.c: Likewise.
+       * sysdeps/x86_64/fpu/s_fdiml.S: Likewise.
+       * math/libm-test.inc (fdim_test): Add test case.  [BZ #376].
+
        * sysdeps/generic/bits/types.h: Fix __SQUAD_TYPE and __UQUAD_TYPE
        for compilers without __GLIBC_HAVE_LONG_LONG.  [BZ #362]
 

diff --git a/math/libm-test.inc b/math/libm-test.inc
index 729fce9..b23ec84 100644 (file)
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -2557,6 +2557,8 @@ fdim_test (void)
   TEST_ff_f (fdim, nan_value, minus_infty, nan_value);
   TEST_ff_f (fdim, nan_value, nan_value, nan_value);
 
+  TEST_ff_f (fdim, plus_infty, plus_infty, 0);
+
   END (fdim);
 }
 

diff --git a/sysdeps/generic/s_fdim.c b/sysdeps/generic/s_fdim.c
index 201f936..5804e63 100644 (file)
--- a/sysdeps/generic/s_fdim.c
+++ b/sysdeps/generic/s_fdim.c
@@ -1,5 +1,5 @@
 /* Return positive difference between arguments.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -31,7 +31,7 @@ __fdim (double x, double y)
     /* Raise invalid flag.  */
     return x - y;
 
-  return x < y ? 0 : x - y;
+  return x <= y ? 0 : x - y;
 }
 weak_alias (__fdim, fdim)
 #ifdef NO_LONG_DOUBLE

diff --git a/sysdeps/generic/s_fdimf.c b/sysdeps/generic/s_fdimf.c
index 64d54b7..2f3ce30 100644 (file)
--- a/sysdeps/generic/s_fdimf.c
+++ b/sysdeps/generic/s_fdimf.c
@@ -1,5 +1,5 @@
 /* Return positive difference between arguments.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -31,6 +31,6 @@ __fdimf (float x, float y)
     /* Raise invalid flag.  */
     return x - y;
 
-  return x < y ? 0 : x - y;
+  return x <= y ? 0 : x - y;
 }
 weak_alias (__fdimf, fdimf)

diff --git a/sysdeps/generic/s_fdiml.c b/sysdeps/generic/s_fdiml.c
index 83049ae..70246ba 100644 (file)
--- a/sysdeps/generic/s_fdiml.c
+++ b/sysdeps/generic/s_fdiml.c
@@ -1,5 +1,5 @@
 /* Return positive difference between arguments.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -31,6 +31,6 @@ __fdiml (long double x, long double y)
     /* Raise invalid flag.  */
     return x - y;
 
-  return x < y ? 0 : x - y;
+  return x <= y ? 0 : x - y;
 }
 weak_alias (__fdiml, fdiml)

diff --git a/sysdeps/i386/i686/fpu/s_fdim.S b/sysdeps/i386/i686/fpu/s_fdim.S
index e610973..30ecff4 100644 (file)
--- a/sysdeps/i386/i686/fpu/s_fdim.S
+++ b/sysdeps/i386/i686/fpu/s_fdim.S
@@ -1,5 +1,5 @@
 /* Compute positive difference.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -28,12 +28,14 @@ ENTRY(__fdim)
        fucomi  %st(1), %st
        jp      1f
 
-       fsubrp  %st, %st(1)
+       jc      3f
+       fstp    %st(1)
        fldz
-       fcomi   %st(1), %st
-       fcmovb  %st(1), %st
        jmp     2f
 
+3:     fsubrp  %st, %st(1)
+       ret
+
 1:     fucomi  %st(0), %st
        fcmovnu %st(1), %st
 2:     fstp    %st(1)

diff --git a/sysdeps/i386/i686/fpu/s_fdimf.S b/sysdeps/i386/i686/fpu/s_fdimf.S
index a22cbe9..888df14 100644 (file)
--- a/sysdeps/i386/i686/fpu/s_fdimf.S
+++ b/sysdeps/i386/i686/fpu/s_fdimf.S
@@ -1,5 +1,5 @@
 /* Compute positive difference.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -28,12 +28,14 @@ ENTRY(__fdimf)
        fucomi  %st(1), %st
        jp      1f
 
-       fsubrp  %st, %st(1)
+       jc      3f
+       fstp    %st(1)
        fldz
-       fcomi   %st(1), %st
-       fcmovb  %st(1), %st
        jmp     2f
 
+3:     fsubrp  %st, %st(1)
+       ret
+
 1:     fucomi  %st(0), %st
        fcmovnu %st(1), %st
 2:     fstp    %st(1)

diff --git a/sysdeps/i386/i686/fpu/s_fdiml.S b/sysdeps/i386/i686/fpu/s_fdiml.S
index fa3c51e..cb0e26e 100644 (file)
--- a/sysdeps/i386/i686/fpu/s_fdiml.S
+++ b/sysdeps/i386/i686/fpu/s_fdiml.S
@@ -1,5 +1,5 @@
 /* Compute positive difference.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -28,12 +28,14 @@ ENTRY(__fdiml)
        fucomi  %st(1), %st
        jp      1f
 
-       fsubrp  %st, %st(1)
+       jc      3f
+       fstp    %st(1)
        fldz
-       fcomi   %st(1), %st
-       fcmovb  %st(1), %st
        jmp     2f
 
+3:     fsubrp  %st, %st(1)
+       ret
+
 1:     fucomi  %st(0), %st
        fcmovnu %st(1), %st
 2:     fstp    %st(1)

diff --git a/sysdeps/powerpc/fpu/s_fdim.c b/sysdeps/powerpc/fpu/s_fdim.c
index 165e2ff..2b767ad 100644 (file)
--- a/sysdeps/powerpc/fpu/s_fdim.c
+++ b/sysdeps/powerpc/fpu/s_fdim.c
@@ -1,5 +1,5 @@
 /* Return positive difference between arguments.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 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
@@ -22,7 +22,7 @@
 double
 __fdim (double x, double y)
 {
-  return x < y ? 0 : x - y;
+  return x <= y ? 0 : x - y;
 }
 weak_alias (__fdim, fdim)
 #ifdef NO_LONG_DOUBLE

diff --git a/sysdeps/powerpc/fpu/s_fdimf.c b/sysdeps/powerpc/fpu/s_fdimf.c
index 997ec89..a27c1e4 100644 (file)
--- a/sysdeps/powerpc/fpu/s_fdimf.c
+++ b/sysdeps/powerpc/fpu/s_fdimf.c
@@ -1,5 +1,5 @@
 /* Return positive difference between arguments.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 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
@@ -22,6 +22,6 @@
 float
 __fdimf (float x, float y)
 {
-  return x < y ? 0 : x - y;
+  return x <= y ? 0 : x - y;
 }
 weak_alias (__fdimf, fdimf)

diff --git a/sysdeps/x86_64/fpu/s_fdiml.S b/sysdeps/x86_64/fpu/s_fdiml.S
index 3460b0f..d63ca00 100644 (file)
--- a/sysdeps/x86_64/fpu/s_fdiml.S
+++ b/sysdeps/x86_64/fpu/s_fdiml.S
@@ -1,5 +1,5 @@
 /* Compute positive difference.
-   Copyright (C) 1997, 1998, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2002, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -28,12 +28,14 @@ ENTRY(__fdiml)
        fucomi  %st(1), %st
        jp      1f
 
-       fsubrp  %st, %st(1)
+       jc      3f
+       fstp    %st(1)
        fldz
-       fcomi   %st(1), %st
-       fcmovb  %st(1), %st
        jmp     2f
 
+3:     fsubrp  %st, %st(1)
+       ret
+
 1:     fucomi  %st(0), %st
        fcmovnu %st(1), %st
 2:     fstp    %st(1)