Originální popis anglicky:
trunc, truncf, truncl - round to truncated integer value
Návod, kniha: POSIX Programmer's Manual
#include <math.h>
double trunc(double
x);
float truncf(float
x);
long double truncl(long double
x);
These functions shall round their argument to the integer value, in floating
format, nearest to but no larger in magnitude than the argument.
Upon successful completion, these functions shall return the truncated integer
value.
If
x is NaN, a NaN shall be returned.
If
x is ±0 or ±Inf,
x shall be returned.
No errors are defined.
The following sections are informative.
None.
None.
None.
None.
The Base Definitions volume of IEEE Std 1003.1-2001,
<math.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
