roundf4

NAME

roundf4 - return the nearest integer values to float elements

SYNOPSIS

Procedure call syntax:

#include <simdmath.h>
vector float roundf4(vector float x);
Link with -lsimdmath

Inline call syntax:

#include <simdmath.h>
#include <roundf4.h>
vector float _roundf4(vector float x);
Parameters  
x input vector

DESCRIPTION

The roundf4 function returns a vector which contains the corresponding elements of x rounded to the nearest integer.

Special Cases:
  • Halfway values are rounded away from 0 (zero), regardless of the current rounding direction.
  • On the SPU, the rounding mode is always towards 0 (zero).

RETURN VALUE

The function roundf4 returns a float vector in which each element is defined as the nearest integer to the corresponding element of x.

ENVIRONMENT

SPU and PPU

CONFORMING TO

SIMD Math library specification for the Cell Broadband Engine™ Architecture.

NOTES

Basis

ISO9899 (C99) round functions.

SEE ALSO

round(3), roundd2(3), ceil(3), ceilf4(3), ceild2(3), floor(3), floorf4(3), floord2(3), nearbyint(3), nearbyintf4(3), nearbyintd2(3), nextafter(3) , nextafterf4(3), nextafterd2(3), irint(3) , irintf4(3), llrint(3) , llrintf4(3), llrintd2(3), rint(3), rintf4(3), rintd2(3), iround(3), iroundf4(3), llround(3), llroundf4(3), llroundd2(3), trunc(3), truncf4(3), truncd2(3)