Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

modfl(3m) [opensolaris man page]

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

NAME
modf, modff, modfl - decompose floating-point number SYNOPSIS
c99 [ 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 5.11 12 Jul 2006 modf(3M)

Check Out this Related Man Page

MODF(3) 						     Linux Programmer's Manual							   MODF(3)

NAME
modf, modff, modfl - extract signed integral and fractional values from floating-point number SYNOPSIS
#include <math.h> double modf(double x, double *iptr); float modff(float x, float *iptr); long double modfl(long double x, long double *iptr); Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): modf(), modfl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L; or cc -std=c99 DESCRIPTION
The modf() function breaks the argument x into an integral part and a fractional part, each of which has the same sign as x. The integral part is stored in the location pointed to by iptr. RETURN VALUE
The modf() function returns the fractional part of x. If x is a NaN, a NaN is returned, and *iptr is set to a NaN. If x is positive infinity (negative infinity), +0 (-0) is returned, and *iptr is set to positive infinity (negative infinity). ERRORS
No errors occur. ATTRIBUTES
Multithreading (see pthreads(7)) The modf(), modff(), and modfl() functions are thread-safe. CONFORMING TO
C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89. SEE ALSO
frexp(3), ldexp(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2013-06-21 MODF(3)
Man Page