ilogbd2

NAME

ilogbd2 - return integer exponents of double elements

SYNOPSIS

Procedure call syntax:

#include <simdmath.h>
#include <math.h>
vector signed long long ilogbd2(vector double x);
Link with -lsimdmath

Inline call syntax:

#include <simdmath.h>
#include <ilogbd2.h>
vector signed long long _ilogbd2(vector double x);
Parameters  
x input vector

DESCRIPTION

The ilogbd2 function extracts the exponents of the input vector as signed integers.

RETURN VALUE

The function ilogbd2 returns a signed long long vector in which each element is defined as:
  • the macro FP_ILOGBNAN if the corresponding element of x is not a number (NaN),
  • the macro FP_ILOGB0 if the corresponding element of x is equal to 0 or Inf, or
  • the value of (long long)logb(x) for the corresponding element of x otherwise.

ENVIRONMENT

SPU only

CONFORMING TO

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

NOTES

Basis

ISO9899 (C99) ilogb functions.

SEE ALSO

ilogb(3), ilogbf4(3), logb(3), logbf4(3), cbrt(3), cbrtd2(3), cbrtf4(3), exp(3), expd2(3), expf4(3), exp2(3), exp2d2(3), exp2f4(3), frexp(3), frexpd2(3), frexpf4(3), hypot(3), hypotd2(3), ldexp(3), ldexpd2(3), ldexpf4(3), log(3), logd2(3), logf4(3), log2(3), log2d2(3), log2f4(3), log10(3), log10d2(3), log10f4(3), log1p(3), log1pd2(3), log1pf4(3), scalbn(3), scalbnf4(3), sqrt(3), sqrtd2(3), sqrtf4(3)