Changeset 96152 in vbox for trunk/src/VBox/Runtime/common/string

Timestamp:

Aug 11, 2022 11:49:45 PM (2 years ago)

Author:

vboxsync

Message:

IPRT: Added RTStrToFloat, RTStrToDouble and RTStrToLongDouble. Still some rought edges; only tested on Windows. bugref:10261

Location:

trunk/src/VBox/Runtime/common/string

Files:

• strtofloat.cpp (added)
• strtonum.cpp (modified) (3 diffs)

trunk/src/VBox/Runtime/common/string/strtonum.cpp

@@ -41 +41 @@
 *********************************************************************************************************************************/
 /** 8-bit char -> digit.
- * Non-digits have values 255 (most), 254 (zero), 253 (colon) and 252 (space).
- */
-static const unsigned char g_auchDigits[256] =
+ * Non-digits have values 255 (most), 254 (zero), 253 (colon), 252 (space), 251 (dot).
+ *
+ * @note Also used by strtofloat.cpp
+ */
+extern const unsigned char g_auchDigits[256] =
 {
     254,255,255,255,255,255,255,255,255,252,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
-    252,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9,253,255,255,255,255,255,
+    252,255,255,255,255,255,255,255,255,255,255,255,255,255,251,255,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9,253,255,255,255,255,255,
     255, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,255,255,255,255,255,
     255, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,255,255,255,255,255,
@@ -54 +56 @@
     255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255
 };
+
+#define DIGITS_ZERO_TERM 254
+#define DIGITS_COLON     253
+#define DIGITS_SPACE     252
+#define DIGITS_DOT       251
 
 /** Approximated overflow shift checks. */
@@ -84 +91 @@
         else if (i == ' ' || i == '\t')
             ch = 252;
+        else if (i == '.')
+            ch = 251;
         if (i == 0)
             printf("\n    %3d", ch);