modf(3) - NetBSD Manual Pages

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MODF(3)                 NetBSD Library Functions Manual                MODF(3)


NAME

     modf, modff, modfl -- extract signed integral and fractional values from
     floating-point number


LIBRARY

     Math Library (libm, -lm)


SYNOPSIS

     #include <math.h>

     double
     modf(double value, double *iptr);

     float
     modff(float value, float *iptr);

     long double
     modfl(long double value, long double *iptr);


DESCRIPTION

     The modf() function breaks the argument value into integral and frac-
     tional parts, each of which has the same sign as the argument.  It stores
     the integral part as a double in the object pointed to by iptr.


RETURN VALUES

     The modf() function returns the signed fractional part of value.


SEE ALSO

     frexp(3), ldexp(3), math(3)


STANDARDS

     The modf() function conforms to ANSI X3.159-1989 (``ANSI C89'').

NetBSD 9.2                       March 7, 2016                      NetBSD 9.2