Changes in uspace/lib/posix/stdlib/strtold.c [4cf8ca6:ec18957a] in mainline

File:

• uspace/lib/posix/stdlib/strtold.c (modified) (12 diffs)

uspace/lib/posix/stdlib/strtold.c

@@ -30 +30 @@
  * @{
  */
-/** @file Backend for floating point conversions.
+/** @file
  */
 
@@ -55 +55 @@
 #endif
 
-// TODO: clean up
+// TODO: clean up, documentation
 
 // FIXME: ensure it builds and works on all platforms
@@ -116 +116 @@
 };
 
-/**
- * Decides whether the argument is still in range representable by
- * long double or not.
- *
- * @param num Floating point number to be checked.
- * @return True if the argument is out of range, false otherwise.
- */
 static inline bool out_of_range(long double num)
 {
@@ -134 +127 @@
  * @param base Number to be multiplied.
  * @param exponent Base 5 exponent.
- * @return base multiplied by 5**exponent.
+ * @return base multiplied by 5**exponent
  */
 static long double mul_pow5(long double base, int exponent)
@@ -180 +173 @@
  * @param base Number to be multiplied.
  * @param exponent Base 2 exponent.
- * @return base multiplied by 2**exponent.
+ * @return base multiplied by 2**exponent
  */
 static long double mul_pow2(long double base, int exponent)
@@ -219 +212 @@
 }
 
-/**
- * Convert decimal string representation of the floating point number.
- * Function expects the string pointer to be already pointed at the first
- * digit (i.e. leading optional sign was already consumed by the caller).
- * 
- * @param sptr Pointer to the storage of the string pointer. Upon successful
- *     conversion, the string pointer is updated to point to the first
- *     unrecognized character.
- * @return An approximate representation of the input floating-point number.
- */
+
 static long double parse_decimal(const char **sptr)
 {
@@ -331 +315 @@
 }
 
-/**
- * Derive a hexadecimal digit from its character representation.
- * 
- * @param ch Character representation of the hexadecimal digit.
- * @return Digit value represented by an integer.
- */
 static inline int hex_value(char ch)
 {
@@ -347 +325 @@
 
 /**
- * Get the count of leading zero bits up to the maximum of 3 zero bits.
- *
  * @param val Integer value.
  * @return How many leading zero bits there are. (Maximum is 3)
@@ -363 +339 @@
 }
 
-/**
- * Convert hexadecimal string representation of the floating point number.
- * Function expects the string pointer to be already pointed at the first
- * digit (i.e. leading optional sign and 0x prefix were already consumed
- * by the caller).
- *
- * @param sptr Pointer to the storage of the string pointer. Upon successful
- *     conversion, the string pointer is updated to point to the first
- *     unrecognized character.
- * @return Representation of the input floating-point number.
- */
 static long double parse_hexadecimal(const char **sptr)
 {
@@ -513 +478 @@
  * @param nptr Input string.
  * @param endptr If non-NULL, *endptr is set to the position of the first
- *     unrecognized character.
+ *    unrecognized character.
  * @return An approximate representation of the input floating-point number.
  */
@@ -547 +512 @@
                 
                 if (endptr != NULL) {
-                        *endptr = (char *) nptr;
-                }
-                errno = EINVAL;
-                return 0;
+                        *endptr = (char *) &nptr[i + 3];
+                }
+                errno = ERANGE;
+                return negative ? -0.0l : +0.0l;
         }
         
@@ -602 +567 @@
 /** @}
  */
+