[llvm-commits] CVS: llvm/include/llvm/ADT/APInt.h

[Chris Lattner]

> Add doubleToBits and floatToBits methods.

These shouldn't be needed.  bitstodouble only works with a 64-bit  
source integer, and bitstofloat only works with a 32-bit source integer.

MathExtras.h should be sufficient here,

-Chris

>
> ---
> Diffs of the changes:  (+34 -0)
>
>  APInt.h |   34 ++++++++++++++++++++++++++++++++++
>  1 files changed, 34 insertions(+)
>
>
> Index: llvm/include/llvm/ADT/APInt.h
> diff -u llvm/include/llvm/ADT/APInt.h:1.33 llvm/include/llvm/ADT/ 
> APInt.h:1.34
> --- llvm/include/llvm/ADT/APInt.h:1.33	Thu Mar  1 14:06:51 2007
> +++ llvm/include/llvm/ADT/APInt.h	Thu Mar  1 14:39:01 2007
> @@ -723,6 +723,40 @@
>      return T.F;
>    }
>
> +  /// The conversion does not do a translation from double to  
> integer, it just
> +  /// re-interprets the bits of the double. Note that it is valid  
> to do this on
> +  /// any bit width but bits from V may get truncated.
> +  /// @brief Converts a double to APInt bits.
> +  APInt& doubleToBits(double V) {
> +    union {
> +      uint64_t I;
> +      double D;
> +    } T;
> +    T.D = V;
> +    if (isSingleWord())
> +      VAL = T.I;
> +    else
> +      pVal[0] = T.I;
> +    return clearUnusedBits();
> +  }
> +
> +  /// The conversion does not do a translation from float to  
> integer, it just
> +  /// re-interprets the bits of the float. Note that it is valid  
> to do this on
> +  /// any bit width but bits from V may get truncated.
> +  /// @brief Converts a float to APInt bits.
> +  APInt& floatToBits(float V) {
> +    union {
> +      uint32_t I;
> +      float F;
> +    } T;
> +    T.F = V;
> +    if (isSingleWord())
> +      VAL = T.I;
> +    else
> +      pVal[0] = T.I;
> +    return clearUnusedBits();
> +  }
> +
>    /// @brief Compute the square root
>    APInt sqrt() const;
>  };
>
>
>
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