Convert a fixed number string into a number.

Convert a fixed number string into a number.

Since v3.3 R2851, 12.04.2012 The string may also begin with hexadecimal numbers. Hexadecimal numbers must begin with "0x".

Name	Type	Default	Description
Return	int		Number value of the string
s	char*	-	Number string

char	s[100];

strcpy (s, "-1231");
showmessage ("%d", val (s)-3); 	// -1234

The following lines all will return the integer 255.

val ("255");
val ("0xff");
val ("0xFF");
val ("0xFFpaul");

Data type int is 64bit aware. Here's an example with integers greater than 32 bit:

int main ()
{
    int    	a 		= 6917529027641081856;
    char  *	astr	= "6917529027641081856";

    wlog ("", "a=%d\t(and as string '%s')\n", a, itoa (a));
    wlog ("", "a=0x%x\t(and as string '%s')\n", a, itoa (a));
    wlog ("", "astr='%s'\t(and as int %d)\n", astr, val (astr));
    wlog ("", "astr='%s'\t(and as int 0x%x)\n", astr, val (astr));

    wlog ("", "string compare	: a ?= astr : %d\n", (a == val (astr)));
    wlog ("", "int compare	: a ?= astr : %d\n", strcmp (itoa (a), astr)==0);

    return 0;
}
// Ausgabe
//
//a=6917529027641081856	(and as string '6917529027641081856')
//a=0x6000000000000000	(and as string '6917529027641081856')
//astr='6917529027641081856'	(and as int 6917529027641081856)
//astr='6917529027641081856'	(and as int 0x6000000000000000)
//string compare	: a ?= astr : 1
//int compare	: a ?= astr : 1

Of course, the above example willstill work, if the intergers are given as hex values.

int main ()
{
    int  	a 		= 0x6000000000000000;
    char  *	astr	= "0x6000000000000000";

    wlog ("", "a=%d\t(and as string '%s')\n", a, itoa (a));
    wlog ("", "a=0x%x\t(and as string '%s')\n", a, itoa (a));
    wlog ("", "astr='%s'\t(and as int %d)\n", astr, val (astr));
    wlog ("", "astr='%s'\t(and as int 0x%x)\n", astr, val (astr));

    wlog ("", "string compare	: a ?= astr : %d\n", (a == val (astr)));
    wlog ("", "int compare	: a ?= astr : %d\n", strcmp (itoa (a), astr)==0);

    return 0;
}
// Ausgabe
//
//a=6917529027641081856	(and as string '6917529027641081856')
//a=0x6000000000000000	(and as string '6917529027641081856')
//astr='0x6000000000000000'	(and as int 6917529027641081856)
//astr='0x6000000000000000'	(and as int 0x6000000000000000)
//string compare	: a ?= astr : 1
//int compare	: a ?= astr : 1

Since

Available

priint:comet InDesign^® Plug-Ins, comet_pdf, Illustrator

See Also

itoa

Alphabetic index HTML hierarchy of classes or Java