osx man page for logbf

Query: logbf

OS: osx

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

LOGB(3) 						   BSD Library Functions Manual 						   LOGB(3)

NAME
logb -- return exponent as a floating-point number
SYNOPSIS
#include <math.h> double logb(double x); long double logbl(long double x); float logbf(float x);
DESCRIPTION
The logb() functions return the exponent of x, represented as a floating-point number.
SPECIAL VALUES
logb(+-0) returns -infinity and raises the "divide-by-zero" floating-point exception. logb(+-infinity) returns +infinity.
VECTOR OPERATIONS
If you need to apply the logb() functions to SIMD vectors or arrays, using the following functions provided by the Accelerate.framework may give significantly better performance: #include <Accelerate/Accelerate.h> vFloat vlogbf(vFloat x); void vvlogbf(float *y, const float *x, const int *n); void vvlogb(double *y, const double *x, const int *n);
SEE ALSO
ilogb(3) log(3) math(3)
STANDARDS
The logb() functions conform to ISO/IEC 9899:2011.
BSD
August 21, 2012 BSD
Related Man Pages
fmod(3) - mojave
fmodl(3) - mojave
logb(3) - freebsd
fmod(3) - osx
fmodl(3) - osx
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