Rechercher une page de manuel
floatToRawIntBits.3Cg
Langue: en
Version: 346473 (ubuntu - 24/10/10)
Section: 3 (Bibliothèques de fonctions)
NAME
floatToRawIntBits - returns the raw 32-bit integer representation of an IEEE 754 floating-point scalar or vectorSYNOPSIS
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.htmlThe 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, truncContenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre