We need a way to pass flags to rombuilds in Raptor via extension flm interfaces, so that the CPP pass
of the rom input files can be informed what toolchain we are building with and conditionally
include or exclude files depending on whether the toolchain could build them.
// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of the License "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// e32\euser\maths\um_rand.cpp
//
//
#include "um_std.h"
EXPORT_C TInt Math::Rand(TInt64 &aSeed)
/**
Generates a stream of uniformly distributed pseudo-random integers
in the range, 0 to KMaxTInt.
For each stream of pseudo-random numbers you wish to generate, you should
pass the reference to the same 64-bit seed on each call to this function.
You should not change the seed between calls.
@param aSeed A reference to a 64-bit seed, which is updated
as a result of the call.
@return The next pseudo-random number in the sequence.
*/
{
aSeed*=214013;
aSeed+=2531011;
return(((TInt)(aSeed>>16))&0x7fffffff);
}
EXPORT_C TReal Math::FRand(TInt64& aSeed) __SOFTFP
/**
Generates a stream of uniformly distributed pseudo-random real numbers
in the range, 0 to 1.
@param aSeed A reference to a 64-bit seed, which is updated
as a result of the call.
@return The next pseudo-random number in the sequence.
*/
{
TUint low = (TUint)Math::Rand(aSeed);
TUint high = (TUint)Math::Rand(aSeed)&0x7FFFFFFF; // make sure TInt64 is positive
TRealX f((static_cast<TInt64>(high) << 32) | low); // construct TRealX 0<=f<2^63
if (f.iExp)
f.iExp-=63; // Scale f to range 0<=f<1
return(TReal(f));
}