floatToRawIntBits
Keywords: floatToRawIntBits, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> floatToRawIntBits - returns the raw 32-bit integer representation of an IEEE 754 floating-point scalar or vector

> ## Synopsis

>     int  floatToRawIntBits(float  x);
>     int1 floatToRawIntBits(float1 x);
>     int2 floatToRawIntBits(float2 x);
>     int3 floatToRawIntBits(float3 x);
>     int4 floatToRawIntBits(float4 x);

> ## Parameters

> x
>   Floating-point vector or scalar to raw cast to a scalar int or vector of ints.

> ## Description

> Returns a representation of the specified floating-point scalar value or vector values according to the IEEE 754 floating-point "single format" bit layout, preserving Not-a-Number (NaN) values.

> This function is based on Java's jave.lang.Float method of the same name. See:

>       http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Float.html

> The Cg compiler can typically optimize floatToRawIntBits so it has no instruction cost.

> ## Reference Implementation

> floatToRawIntBits operates consistent with the following ANSI C code:

>     int floatToRawIntBits(float  x)
>     {
>       union {
>         float f;  // assuming 32-bit IEEE 754 single-precision
>         int i;    // assuming 32-bit 2's complement int
>       } u;

>       u.f = x;
>       return u.i;
>     }

> ## Profile Support

> floatToRawIntBits is supported by the gp4vp, gp4gp, and gp4vp profiles.

> floatToRawIntBits is not supported by pre-G80 profiles.

> ## See Also

> ceil, floatToIntBits, floor, intBitsToFloat, round, trunc