X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=device%2Finclude%2Ffloat.h;h=b31679bced10cea40910f3a40de507852c9dec9c;hb=a8a7fc8a514bc79114c6d76d6a6aeb885387478c;hp=5870fdb8a4724ec7a35024b78143ea7c5f2d9a2c;hpb=8bcea68f26d5b6764fe458b1a5a5520a52bd7a60;p=fw%2Fsdcc

diff --git a/device/include/float.h b/device/include/float.h
index 5870fdb8..b31679bc 100644
--- a/device/include/float.h
+++ b/device/include/float.h
@@ -41,12 +41,13 @@
 /* the following deal with IEEE single-precision numbers */
 #define EXCESS		126
 #define SIGNBIT		((unsigned long)0x80000000)
-#define HIDDEN		(unsigned long)(1 << 23)
-#define SIGN(fp)	((fp >> (8*sizeof(fp)-1)) & 1)
-#define EXP(fp)		(((fp) >> 23) & (unsigned int) 0x00FF)
+#define __INFINITY	((unsigned long)0x7F800000)
+#define HIDDEN		(unsigned long)(1ul << 23)
+#define SIGN(fp)	(((unsigned long)(fp) >> (8*sizeof(fp)-1)) & 1)
+#define EXP(fp)		(((unsigned long)(fp) >> 23) & (unsigned int) 0x00FF)
 #define MANT(fp)	(((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
 #define NORM            0xff000000
-#define PACK(s,e,m)	((s) | ((e) << 23) | (m))
+#define PACK(s,e,m)	((s) | ((unsigned long)(e) << 23) | (m))
 
 float __uchar2fs (unsigned char);
 float __schar2fs (signed char);
@@ -68,11 +69,30 @@ float __fsdiv (float, float);
 
 char __fslt (float, float);
 char __fseq (float, float);
-char __fsqt (float, float);
+char __fsgt (float, float);
 
-#endif
 
+#if defined(SDCC_FLOAT_LIB) && defined(SDCC_mcs51) && !defined(SDCC_USE_XSTACK) && !defined(_SDCC_NO_ASM_LIB_FUNCS)
 
+#define FLOAT_ASM_MCS51
 
+// This adds extra code for proper round-off, in
+// an attempt to match the results from gcc.
+#define FLOAT_FULL_ACCURACY
 
+// This adds about 66 bytes to the code size and
+// significantly speeds up shift operations more
+// than 8 bits (common when subtracting numbers
+// of significantly different magnitude and scaling
+// to fixed point)
+#define FLOAT_SHIFT_SPEEDUP
+
+#define sign_a  psw.1
+#define sign_b  psw.5
+#define exp_a dpl
+#define exp_b dph
+#endif	// using mcs51 assembly
+
+
+#endif	// __SDC51_FLOAT_H