* device/include/float.h: added __INFINITY

[fw/sdcc] / device / lib / _fsneq.c

diff --git a/device/lib/_fsneq.c b/device/lib/_fsneq.c
index 1d23ed38dc736144b6d5d8d72d5567ba41f276a6..4b675d02f8a5d2bffb0f54c94b33189865e617cc 100644 (file)
--- a/device/lib/_fsneq.c
+++ b/device/lib/_fsneq.c
@@ -1,3 +1,47 @@
+/* Floating point library in optimized assembly for 8051
+ * Copyright (c) 2004, Paul Stoffregen, paul@pjrc.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+
+#define SDCC_FLOAT_LIB
+#include <float.h>
+
+
+#ifdef FLOAT_ASM_MCS51
+
+// char __fsneq (float a, float b)
+static void dummy(void) __naked
+{
+       __asm
+       .globl  ___fsneq
+___fsneq:
+       mov     r7, a
+       mov     r0, sp
+       dec     r0
+       dec     r0
+       lcall   fs_check_negative_zeros
+       lcall   fs_compare_uint32
+       mov     dpl, r1
+       ret
+       __endasm;
+}
+
+#else
+
 /*
 ** libgcc support for software floating point.
 ** Copyright (C) 1991 by Pipeline Associates, Inc.  All rights reserved.
@@ -16,8 +60,6 @@
 
 /* (c)2000/2001: hacked a little by johan.knol@iduna.nl for sdcc */
 
-#include <float.h>
-
 union float_long
   {
     float f;
@@ -32,12 +74,11 @@ char __fsneq (float a1, float a2)
   fl1.f = a1;
   fl2.f = a2;
 
-  if (fl1.l<0 && fl2.l<0)
-    {
-      fl1.l ^= SIGNBIT;
-      fl2.l ^= SIGNBIT;
-    }
   if (fl1.l == fl2.l)
     return (0);
+  if (((fl1.l | fl2.l) & 0x7FFFFFFF) == 0)
+    return (0);
   return (1);
 }
+
+#endif