You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
3.3 KiB
128 lines
3.3 KiB
//+---------------------------------------------------------------------------
|
|
//
|
|
// Copyright (C) 1996, Microsoft Corporation.
|
|
//
|
|
// File: xtow.cxx
|
|
//
|
|
// Contents: formats numbers into wide strings
|
|
//
|
|
// History: 96/Jan/3 DwightKr Created
|
|
// 96/Apr/3 dlee optimized and cleaned up
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
#include <pch.cxx>
|
|
#pragma hdrstop
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Note - added to C run-times; remove when new run-times are available.
|
|
// On second thought, just use this one -- it saves an ascii=>wide and
|
|
// radix checking.
|
|
// This routine isn't for real formatting -- it's just for input to
|
|
// Win32's real number formatting routine
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: IDQ_ulltow_format
|
|
//
|
|
// Synopsis: formats an _int64 in a wide string.
|
|
//
|
|
// Arguments: [val] - value to format
|
|
// [buf] - buffer for the result
|
|
// [fIsNegative] - true if val is negative, false otherwise
|
|
//
|
|
// History: 96/Apr/05 dlee Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
void IDQ_ulltow_format(
|
|
ULONGLONG val,
|
|
WCHAR * buf,
|
|
int fIsNegative )
|
|
{
|
|
WCHAR *p = buf;
|
|
|
|
if ( fIsNegative )
|
|
{
|
|
// negative, so output '-' and negate
|
|
|
|
*p++ = L'-';
|
|
val = (ULONGLONG) (-(LONGLONG)val);
|
|
}
|
|
|
|
WCHAR *firstdig = p; // save pointer to first digit
|
|
|
|
do
|
|
{
|
|
unsigned digval = (unsigned) (val % 10);
|
|
val /= 10; // get next digit
|
|
|
|
Win4Assert( digval <= 9 );
|
|
|
|
// convert to unicode and store
|
|
|
|
*p++ = (WCHAR) (digval + L'0');
|
|
} while ( val > 0 );
|
|
|
|
// We now have the digit of the number in the buffer, but in reverse
|
|
// order. Thus we reverse them now.
|
|
|
|
*p-- = 0;
|
|
|
|
do
|
|
{
|
|
WCHAR temp = *p;
|
|
*p = *firstdig;
|
|
*firstdig = temp; // swap *p and *firstdig
|
|
--p;
|
|
++firstdig; // advance to next two digits
|
|
} while ( firstdig < p ); // repeat until halfway
|
|
}
|
|
|
|
void IDQ_ultow_format(
|
|
ULONG val,
|
|
WCHAR * buf,
|
|
int fIsNegative )
|
|
{
|
|
WCHAR *p = buf;
|
|
|
|
if ( fIsNegative )
|
|
{
|
|
// negative, so output '-' and negate
|
|
|
|
*p++ = L'-';
|
|
val = (ULONG) (-(LONG)val);
|
|
}
|
|
|
|
WCHAR *firstdig = p; // save pointer to first digit
|
|
|
|
do
|
|
{
|
|
unsigned digval = (unsigned) (val % 10);
|
|
val /= 10; // get next digit
|
|
|
|
Win4Assert( digval <= 9 );
|
|
|
|
// convert to unicode and store
|
|
|
|
*p++ = (WCHAR) (digval + L'0');
|
|
} while ( val > 0 );
|
|
|
|
// We now have the digit of the number in the buffer, but in reverse
|
|
// order. Thus we reverse them now.
|
|
|
|
*p-- = 0;
|
|
|
|
do
|
|
{
|
|
WCHAR temp = *p;
|
|
*p = *firstdig;
|
|
*firstdig = temp; // swap *p and *firstdig
|
|
--p;
|
|
++firstdig; // advance to next two digits
|
|
} while ( firstdig < p ); // repeat until halfway
|
|
}
|
|
|