* device/lib/pic/libdev/Makefile.in: build device-specific

[fw/sdcc] / device / lib / _ulong2fs.c

diff --git a/device/lib/_ulong2fs.c b/device/lib/_ulong2fs.c
index f379420494a11e4c1a49823ef5e8ab80ea28c884..32a8192d8488ebb9bd0ed77ea11b1d8107c6d208 100644 (file)
--- a/device/lib/_ulong2fs.c
+++ b/device/lib/_ulong2fs.c
@@ -1,3 +1,51 @@
+/* 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
+
+// float long __ulong2fs (float x)
+static void dummy(void) __naked
+{
+       __asm
+       .globl  ___ulong2fs
+___ulong2fs:
+       mov     r4, a
+       mov     r3, b
+       mov     r2, dph
+       mov     r1, dpl
+       mov     a, #158
+       .globl  ulong2fs_doit
+ulong2fs_doit:
+       clr     sign_a
+long2fs_doit:
+       mov     exp_a, a
+       lcall   fs_normalize_a
+       ljmp    fs_round_and_return
+       __endasm;
+}
+
+#else
+
 /*
 ** libgcc support for software floating point.
 ** Copyright (C) 1991 by Pipeline Associates, Inc.  All rights reserved.
@@ -16,8 +64,6 @@
 
 /* (c)2000/2001: hacked a little by johan.knol@iduna.nl for sdcc */
 
-#include <float.h>
-
 union float_long
   {
     float f;
@@ -60,3 +106,5 @@ float __ulong2fs (unsigned long a )
 
   return (fl.f);
 }
+
+#endif