modf(3) [osx man page]

MODF(3) 						   BSD Library Functions Manual 						   MODF(3)

NAME

     modf -- return integral and fractional parts

SYNOPSIS

     #include <math.h>

     double
     modf(double value, double *iptr);

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

     float
     modff(float value, float *iptr);

DESCRIPTION

     The modf() break value into integral and fractional parts, each of which has the same sign as the argument.  They return the fractional part,
     and store the integral part (as a floating-point number) in the object pointed to by iptr

SPECIAL VALUES

     modf(+-infinity, iptr) returns +-0 and stores +-infinity in the object pointed to by iptr.

     modf(NaN, iptr) returns a NaN and stores a NaN in the object pointed to by iptr.

SEE ALSO

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

STANDARDS

     The modf() functions conform to ISO/IEC 9899:2011.

BSD
								 December 11, 2006							       BSD

modf(3M)						  Mathematical Library Functions						  modf(3M)

NAME

       modf, modff, modfl - decompose floating-point number

SYNOPSIS

       cc [ flag... ] file... -lm [ library... ]
       #include <math.h>

       double modf(double x, double *iptr);

       float modff(float x, float *iptr);

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

DESCRIPTION

       These  functions  break	the  argument x into integral and fractional parts, each of which has the same sign as the argument. It stores the
       integral part as a double for the modf() function, a float for the modff() function, or a long double for themodfl() function in the object
       pointed to by iptr.

RETURN VALUES

       Upon successful completion, these functions return the signed fractional part of x.

       If x is NaN, a NaN is returned and *iptr is set to NaN.

       If x is +-Inf, +-0 is returned and *iptr is set to +-Inf.

ERRORS

       No errors are defined.

USAGE

       These functions compute the function result and *iptr such that:

       a = modf(x, &iptr) ;
       x == a+*iptr ;

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       frexp(3M), isnan(3M), ldexp(3M), attributes(5), standards(5)

SunOS 5.10							    16 Aug 2004 							  modf(3M)