NAME
llrint(), llrintf(), llrintl(), llrintw(), llrintq() — round to nearest long long functions
SYNOPSIS
#include <math.h>
long long llrint(double x);
HP Integrity Server Only
long long llrintf(float x);
long long llrintl(long double x);
long long llrintw(extended x);
long long llrintq(quad x);
DESCRIPTION
llrint()
rounds its argument to the nearest integral value, rounding according
to the current rounding direction.
llrint()
is equivalent to
lrint(),
except that it rounds to
long long
instead of
long int.
Integrity Server Only
llrintf()
is a
float
version of
llrint();
it takes a
float
argument.
llrintl()
is a
long double
version of
llrint();
it takes a
long double
argument.
llrintw()
is an
extended
version of
llrint();
it takes an
extended
argument.
llrintq()
is equivalent to
llrintl()
on HP-UX systems.
USAGE
To use these functions,
compile either with the default
-Ae
option or with the
-Aa
and
-D_HPUX_SOURCE
options.
To use (for Integrity servers)
llrintw()
or
llrintq(),
compile also with the
-fpwidetypes
option.
Make sure your program includes
<math.h>.
Link in the math library by specifying
-lm
on the compiler or linker command line.
For more information, see the
HP-UX floating-point guide for HP Integrity servers
at the following site:
http://www.hp.com/go/fp.
RETURN VALUE
If the rounded value is outside
the range of
long long,
the numeric result is the maximum or minimum
long long
value and the invalid floating-point
exception is raised. On Integrity servers, if the rounded value is outside
the range of
long long,
the numeric result is the minimum
long long
value.
When
llrint()
raises no other floating-point exception and the result differs from
the argument, the function raises the inexact floating-point
exception.
ERRORS
No errors are defined.
SEE ALSO
ceil(3M),
floor(3M),
fabs(3M),
fmod(3M),
fegetround(3M),
fesetround(3M),
llround(3M),
lrint(3M),
lround(3M),
rint(3M),
round(3M),
trunc(3M),
math(5),
fenv(5).
STANDARDS CONFORMANCE
llrint(),
llrintf(),
llrintl()
: ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'')
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