Table of Contents
string to double
The function converts the initial portion of the string
pointed to by to representation. The expected form of the string is an
optional plus (‘‘+’’) or minus sign (‘‘-’’) followed by a sequence of digits optionally
containing a decimal-point character, optionally followed by an exponent.
An exponent consists of an ‘‘E’’ or ‘‘e’’, followed by an optional plus or minus
sign, followed by a sequence of digits. Leading white-space characters in
the string (as defined by the function) are skipped.
The
function returns the converted value, if any. If is not a pointer to
the character after the last character used in the conversion is stored
in the location referenced by If no conversion is performed, zero is
returned and the value of is stored in the location referenced by If
the correct value would cause overflow, plus or minus is returned (according
to the sign of the value), and is stored in If the correct value would
cause underflow, zero is returned and is stored in
Overflow
or underflow occurred.
The function conforms to
Table of Contents