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modf(3)

NAME

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


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <math.h>

     double
     modf(double value, 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 ISO/IEC 9899:1990 (``ISO C90'').

FreeBSD 5.4			 June 4, 1993			   FreeBSD 5.4

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