integrate dietlibc/stdio per default for cdrom and disk only installs

1 files changed, 52 insertions, 0 deletions

diff --git a/mdk-stage1/dietlibc/lib/strtod.c b/mdk-stage1/dietlibc/lib/strtod.c
new file mode 100644
index 000000000..767be679f
--- /dev/null
+++ b/mdk-stage1/dietlibc/lib/strtod.c
@@ -0,0 +1,52 @@
+#include <string.h>
+
+extern char isspace(char c);
+
+#ifdef __GNUC__
+static inline char isdigit(char c) { return (c>='0' && c<='9'); }
+#endif
+
+double strtod(const char *nptr, char **endptr) {
+  double d=0;
+  register const char *c=nptr;
+  char neg=0;
+  while (*c && isspace(*c)) ++c;
+  switch (*c) {
+  case '-': neg=1;
+  case '+': c++; break;
+  default: break;
+  }
+  while (isdigit(*c)) {
+    d=d*10+(*c-'0');
+    ++c;
+  }
+  if (*c=='.') {
+    double factor=.1;
+    while (isdigit(*++c)) {
+      d=d+(factor*(*c-'0'));
+      factor/=10;
+    }
+  }
+  if ((*c|32)=='e') {
+    int exp=0;
+    char neg=0;
+    if (c[1]<'0') {
+      switch (*c) {
+      case '-': neg=1;
+      case '+': c++; break;
+      default:
+	d=0;
+	c=nptr;
+	goto done;
+      }
+    }
+    while (isdigit(*++c))
+      exp=exp*10+(*c-'0');
+    while (exp) {	/* XXX: this introduces rounding errors */
+      d*=10; --exp;
+    }
+  }
+done:
+  if (endptr) *endptr=(char*)c;
+  return d;
+}