PR_strtod

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Converts the prefix of a decimal string to the nearest double-precision floating point number.

Syntax

Parameters

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

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, 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.