1.2 KiB
PR_strtod
Converts the prefix of a decimal string to the nearest double-precision floating point number.
Syntax
#include <prdtoa.h>
PRFloat64 PR_strtod(const char *s00, char **se);
Parameters
The function has these parameters:
s00-
The input string to be scanned.
se-
A pointer that, if not
NULL, will be assigned the address of the last character scanned in the input string.
Returns
The result of the conversion is a PRFloat64 value equivalent to the
input string. If the parameter se is not NULL the location it
references is also set.
Description
{ref}PR_strtod converts the prefix of the input decimal string pointed to
by s00 to a nearest double-precision floating point number. Ties are
broken by the IEEE round-even rule. The string is scanned up to the
first unrecognized character. If the value of se is not
(char **) NULL, {ref}PR_strtod stores a pointer to the character
terminating the scan in *se. If the answer would overflow, a
properly signed HUGE_VAL (infinity) is returned. If the answer would
underflow, a properly signed 0 is returned. In both cases,
PR_GetError() returns the error code PR_RANGE_ERROR. If no
number can be formed, se is set to s00, and 0 is returned.