FABS(3) Linux Programmer's Manual FABS(3) NAME fabs, fabsf, fabsl - absolute value of floating-point number SYNOPSIS #include <math.h> double fabs(double x); float fabsf(float x); long double fabsl(long double x); Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fabsf(), fabsl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L; or cc -std=c99 DESCRIPTION These functions return the absolute value of the floating-point number x. RETURN VALUE These functions return the absolute value of x. If x is a NaN, a NaN is returned. If x is -0, +0 is returned. If x is negative infinity or positive infinity, positive infinity is returned. ERRORS No errors occur. ATTRIBUTES Multithreading (see pthreads(7)) The fabs(), fabsf(), and fabsl() functions are thread-safe. CONFORMING TO C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89. SEE ALSO abs(3), cabs(3), ceil(3), floor(3), labs(3), rint(3) COLOPHON This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/. 2013-07-10 FABS(3)
Czas wygenerowania: 0.00048 sek.
Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson
Copyright © 2003-2023 Linux.pl
Hosted by Hosting Linux.pl