1 files changed, 37 insertions, 0 deletions
diff --git a/src/stdlib/strtod.c b/src/stdlib/strtod.c
new file mode 100644
index 00000000..4420b02e
--- /dev/null
+++ b/src/stdlib/strtod.c
@@ -0,0 +1,37 @@
+#include <stdlib.h>
+#include "errno.h"
+
+/** convert string to floating-point **/
+
+double strtod(const char * restrict nptr, char ** restrict endptr)
+{
+	(void)nptr; (void)endptr;
+	/* TODO */
+
+	if (0) {
+		errno = ERANGE;	/* converted value out of range */
+	}
+	
+	return 0.0;
+}
+
+/***
+converts the string at ARGUMENT(nptr) to a TYPE(double).
+Leading whitespace is ignored. The first character that is not a valid character
+for a floating-point constant and any characters after it are also ignored. A
+pointer to the first invalid character is stored in ARGUMENT(endptr), unless
+ARGUMENT(endptr) is CONSTANT(NULL).
+
+The converted portion of the string may start with an optional plus or minus
+sign, followed by a nonempty series of digits, optionally containing a
+decimal-point character. This may optionally be followed by an exponent.
+***/
+
+/*
+LC_CTYPE
+RETURN(ZERO, underflow or no conversion could be performed)
+RETURN(CONSTANT(HUGE_VAL), converted value too large)
+RETURN(CONSTANT(-HUGE_VAL), converted value too small)
+RETURN(VAR(a TYPE(double)), the converted value)
+STDC(1)
+*/