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intBitsToFloat.3Cg
Langue: en
Version: 358877 (ubuntu - 24/10/10)
Section: 3 (Bibliothèques de fonctions)
NAME
intBitsToFloat - returns the float value corresponding to a given bit represention.of a scalar int value or vector of int valuesSYNOPSIS
float intBitsToFloat(int x); float1 intBitsToFloat(int1 x); float2 intBitsToFloat(int2 x); float3 intBitsToFloat(int3 x); float4 intBitsToFloat(int4 x);
PARAMETERS
- x
- Integer vector or scalar to raw cast to a scalar float or vector of floats
DESCRIPTION
Returns the IEEE 754 float scalar value or vector values corresponding to a given 32-bit integer bit represention for a scalar int value or vector of int 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.htmlThe Cg compiler can typically optimize intBitsToFloat so it has no instruction cost.
REFERENCE IMPLEMENTATION
intBitsToFloat operates consistent with the following ANSI C code:float floatToRawIntBits(int x) { union { float f; // assuming 32-bit IEEE 754 single-precision int i; // assuming 32-bit 2's complement int } u;
u.i = x; return u.f; }
PROFILE SUPPORT
intBitsToFloat is supported by the gp4vp, gp4gp, and gp4vp profiles.intBitsToFloat is not supported by pre-G80 profiles.
SEE ALSO
ceil, floatToIntBits, floatToRawIntBits, floor, round, truncContenus ©2006-2024 Benjamin Poulain
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