Originální popis anglicky:
scalb, scalbf, scalbl, scalbn, scalbnf, scalbnl, scalbln, scalblnf, scalblnl -
multiply floating-point number by integral power of radix
Návod, kniha: Linux Programmer's Manual
#include <math.h>
double scalb(double x, double exp);
float scalbf(float x, double exp);
long double scalbl(long double x, double
exp);
double scalbn(double x, int exp);
float scalbnf(float x, int exp);
long double scalbnl(long double x, int exp);
double scalbln(double x, long int exp);
float scalblnf(float x, long int exp);
long double scalblnl(long double x, long int
exp);
Link with -lm.
These functions multiply their first argument
x by FLT_RADIX (probably 2)
to the power
exp.
If FLT_RADIX equals 2, then
scalbn() is equivalent to
ldexp().
The value of FLT_RADIX is found in
<float.h>.
The
scalb() function is from BSD 4.3. The
scalbn() and
scalbln() functions are from C99. All three are in POSIX 1003.1-2003.
The
scalb() function is marked obsolescent.
ldexp(3)
