Changeset 394

Timestamp:

Jul 16, 2003, 12:53:47 PM (22 years ago)

Author:

bird

Message:

#563: Updated float.h to match float-i386.h from GCC.

File:

• trunk/src/emx/include/float.h (modified) (4 diffs, 1 prop)

trunk/src/emx/include/float.h

@@ -1 @@
-/* float.h (emx+gcc) */
+/* float.h (emx+gcc)
+ * (bird: this file must be used over the one from GCC!)
+ */
 
 #ifndef _FLOAT_H
@@ -8 +10 @@
 #endif
 
-#define FLT_RADIX       2
-#define FLT_ROUNDS      1
+#define FLT_RADIX       2               /* b */
+#define FLT_ROUNDS      1               /* FP addition rounds to nearest */
+#define FLT_EVAL_METHOD (-1)            /* i387 semantics are...interesting */
+#define DECIMAL_DIG     21              /* max precision in decimal digits */
+
+#define FLT_MANT_DIG    24
+#define FLT_MIN_EXP     (-125)
+#define FLT_MAX_EXP     128
+#define FLT_DIG         6
+#define FLT_MIN_10_EXP  (-37)
+#define FLT_MAX_10_EXP  38
+#define FLT_MIN         1.17549435e-38F
+#define FLT_MAX         3.40282347e+38F
+#define FLT_EPSILON     1.19209290e-07F
 
 #define DBL_MANT_DIG    53
@@ -18 +32 @@
 #define DBL_MAX_10_EXP  308
 #define DBL_MIN         2.2250738585072014e-308
-#define DBL_MAX         1.7976931348623158e+308
+#define DBL_MAX         1.7976931348623157e+308
 #define DBL_EPSILON     2.2204460492503131e-016
 
-#define FLT_MANT_DIG    24
-#define FLT_MIN_EXP     (-125)
-#define FLT_MAX_EXP     128
-#define FLT_DIG         6
-#define FLT_MIN_10_EXP  (-37)
-#define FLT_MAX_10_EXP  38
-#define FLT_MIN         1.17549435e-38F
-#define FLT_MAX         3.40282346e+38F
-#define FLT_EPSILON     1.19209290e-07F
-
+/* bird: There is some divergence in the values for this section.
+ *       We'll go for the GCC values. */
 #define LDBL_MANT_DIG   64
 #define LDBL_MIN_EXP    (-16381)
@@ -37 +43 @@
 #define LDBL_MIN_10_EXP (-4931)
 #define LDBL_MAX_10_EXP 4932
+#if 0
+/* emx: */
 #define LDBL_MIN        3.3621031431120935063e-4932L
 #define LDBL_MAX        1.1897314953572317650e+4932L
 #define LDBL_EPSILON    1.08420217248550443400745280086994171142578125e-0019L
+#else
+/* gcc: i386 config */
+#define LDBL_MIN        3.36210314311209350626e-4932L
+#define LDBL_MAX        1.18973149535723176502e+4932L
+#define LDBL_EPSILON    1.08420217248550443401e-19L
+#endif
+
+
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+#define FLT_EVAL_METHOD 0
+#define DECIMAL_DIG     17
+#endif /* C99 */
+
 
 #if !defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE)