More like:
int StrHexToInt(const char* pszHex)
{
int nResult = 0; // Result will go here
for (int i = 0; *pszHex && (i < (sizeof(int) << 1)); i++)
{ // While we have a string and
haven't exceeded int's precision...
nResult <<= 4; // Shift up accumulated result
char c = *pszHex++; // Grab a HEX (text) digit
if ((c & 0xF0) == 0x30) // test the "zone"
nResult |= (c & 0x0F); // 0 - 9
else
nResult |= ((c & 0x0F) + 9); // Assume [A - F] or [a - f]
}
return (nResult);
}
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jason
Dawes
Sent: Monday, May 22, 2000 3:10 PM
To: Palm Developer Forum
Subject: Re: Converting an Hexa String to int
At 04:28 PM 5/22/00 +0200, you wrote:
>Is there, in Palm API, an efficient way to convert an Hexadecimal String
to the corresponding integer value ?
>If no, can someone show me a quick way to do that ?
>
Should be something like this:
// assumes s is a valid hex string containing an int with no leading 0x
int StrHToA(char * s)
{
int i, n = 0;
for(i=0;i<sizeof(int) && (1 || (n << 4));i++)
{
c = s[i];
if (c & 0x0400) // A-Z or a-z
c = (c & 0x000F) + 9;
else // assume it's 0-9
c &= 0x000F;
n |= c;
}
return n;
}
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