* fixed GCC 4.4.0 mingw compilation:

[fw/sdcc] / device / lib / _slong2fs.c

diff --git a/device/lib/_slong2fs.c b/device/lib/_slong2fs.c
index 0b1e2259da4920cc36896a9185763c5c161c877f..b19c59c2efe23512e7c789109b47883e6e5ba1ad 100644 (file)
--- a/device/lib/_slong2fs.c
+++ b/device/lib/_slong2fs.c
@@ -1,3 +1,70 @@
+/* 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 __slong2fs (long x)
+static void dummy(void) __naked
+{
+       __asm
+       .globl  ___slong2fs
+___slong2fs:
+       mov     r4, a
+       mov     r3, b
+       mov     r2, dph
+       mov     r1, dpl
+       mov     a, #158
+       .globl  slong2fs_doit
+slong2fs_doit:
+       mov     exp_a, a
+       clr     sign_a
+       mov     a, r4
+       jnb     acc.7, slong2fs_positive
+       setb    sign_a
+       mov     a, r1
+       cpl     a
+       add     a, #1
+       mov     r1, a
+       mov     a, r2
+       cpl     a
+       addc    a, #0
+       mov     r2, a
+       mov     a, r3
+       cpl     a
+       addc    a, #0
+       mov     r3, a
+       mov     a, r4
+       cpl     a
+       addc    a, #0
+       mov     r4, a
+slong2fs_positive:
+       lcall   fs_normalize_a
+       ljmp    fs_round_and_return
+       __endasm;
+}
+
+#else
+
 /* convert signed long to float */
 float __slong2fs (signed long sl) {
   if (sl<0) 
@@ -5,3 +72,5 @@ float __slong2fs (signed long sl) {
   else 
     return __ulong2fs(sl);
 }
+
+#endif