Re-import from Subversion.

[pdclib] / functions / stdlib / strtox.c

diff --git a/functions/stdlib/strtox.c b/functions/stdlib/strtox.c
index cca971138d5fb6ed339b569f843157e5e70632f3..db739529f7e33b90068712b467b1465de12a4fab 100644 (file)
--- a/functions/stdlib/strtox.c
+++ b/functions/stdlib/strtox.c
@@ -1,9 +1,9 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* ----------------------------------------------------------------------------
+ * $Id$
+ * ----------------------------------------------------------------------------
+ * Public Domain C Library - http://pdclib.sourceforge.net
+ * This code is Public Domain. Use, modify, and redistribute at will.
+ * --------------------------------------------------------------------------*/
 
 double atof( const char * s ) { /* TODO */ };
 int atoi( const char * s ) { /* TODO */ };
@@ -19,3 +19,131 @@ unsigned long long strtoull( const char * restrict s, char * * restrict endptr,
 
 long strtol( const char * restrict s, char * * restrict endptr, int base ) { /* TODO */ };
 unsigned long strtoul( const char * restrict s, char * * restrict endptr, int base) { /* TODO */ };
+
+/* PDPC code - unreviewed, verbatim
+double atof(const char *nptr)
+{
+    return (strtod(nptr, (char **)NULL));
+}
+
+double strtod(const char *nptr, char **endptr)
+{
+    double x = 0.0;
+    
+    while (1)
+    {
+        if (isdigit(*nptr))
+        {
+            x = x * 10 + (*nptr - '0');
+        }
+        else
+        {
+            if (endptr != NULL)
+            {
+                *endptr = (char *)nptr;
+            }
+            break;
+        }
+        nptr++;
+    }
+    return (x);
+}
+
+int atoi(const char *nptr)
+{
+    return ((int)strtol(nptr, (char **)NULL, 10));
+}
+
+long int atol(const char *nptr)
+{
+    return (strtol(nptr, (char **)NULL, 10));
+}
+
+long int strtol(const char *nptr, char **endptr, int base)
+{
+    long x = 0;
+    int undecided = 0;
+    
+    if (base == 0)
+    {
+        undecided = 1;
+    }
+    while (1)
+    {
+        if (isdigit(*nptr))
+        {
+            if (base == 0)
+            {
+                if (*nptr == '0')
+                {
+                    base = 8;
+                }
+                else
+                {
+                    base = 10;
+                    undecided = 0;
+                }
+            }
+            x = x * base + (*nptr - '0');
+            nptr++;
+        }
+        else if (isalpha(*nptr))
+        {
+            if ((*nptr == 'X') || (*nptr == 'x'))
+            {
+                if ((base == 0) || ((base == 8) && undecided))
+                {
+                    base = 16;
+                    undecided = 0;
+                }
+                else
+                {
+                    break;
+                }
+            }
+            else
+            {
+                x = x * base + (toupper((unsigned char)*nptr) - 'A') + 10;
+                nptr++;
+            }
+        }
+        else
+        {
+            break;
+        }
+    }
+    if (endptr != NULL)
+    {
+        *endptr = (char *)nptr;
+    }
+    return (x);
+}
+
+unsigned long int strtoul(const char *nptr, char **endptr, int base)
+{
+    unsigned long x = 0;
+    
+    while (1)
+    {
+        if (isdigit(*nptr))
+        {
+            x = x * base + (*nptr - '0');
+            nptr++;
+        }
+        else if (isalpha(*nptr) && (base > 10))
+        {
+            x = x * base + (toupper((unsigned char)*nptr) - 'A') + 10;
+            nptr++;
+        }
+        else
+        {
+            break;
+        }
+    }
+    if (endptr != NULL)
+    {
+        *endptr = (char *)nptr;
+    }
+    return (x);
+}
+*/