Subj : Re: INT_TO_JSVAL  problem
To   : Youngsun Jeong <celleris@naver.com>
From : Brendan Eich <brendan@meer.net>
Date : Wed Oct 08 2003 10:52 am

Youngsun Jeong wrote:

>Hello, I want to know why "INT_TO_JSVAL" uses left-shift operator.
>In case of 32bits data(e.g. bf5ff260), "INT_TO_JSVAL" causes loss of
>data. Please tell me why....
>  
>

It doesn't cause loss of data if you use it as intended.

Use JS_NewNumberValue if you cannot guarantee that the integer you were 
passing to INT_TO_JSVAL satisfies the constraint INT_FITS_IN_JSVAL.  In 
other words, simply use JS_NewNumberValue unconditionally except for 
cases where you have need to optimize, or know that the integer is 
"small enough."

/be

.