GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 2.1AS(Slurm) |
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frexp(3) |
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frexp − convert floating-point number to fractional and integral components
#include <math.h>
double frexp(double x, int *exp);
The frexp() function is used to split the number x into a normalized fraction and an exponent which is stored in exp.
The frexp() function returns the normalized fraction. If the argument x is not zero, the normalized fraction is x times a power of two, and is always in the range 1/2 (inclusive) to 1 (exclusive). If x is zero, then the normalized fraction is zero and zero is stored in exp.
SVID 3, POSIX, BSD 4.3, ISO 9899
ldexp(3), modf(3)
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frexp(3) | |