FLOOR(3) | Library Functions Manual | FLOOR(3) |
floor
— round to
largest integral value not greater than x
#include
<math.h>
double
floor
(double
x);
long double
floorl
(long
double x);
float
floorf
(float
x);
The
floor
()
functions return the largest integral value less than or equal to
x.
floor
(±0)
returns ±0.
floor
(±infinity)
returns ±infinity.
If you need to apply the floor
() function
to SIMD vectors or arrays, using the following functions provided by the
Accelerate.framework may give significantly better performance:
#include
<Accelerate/Accelerate.h>
vFloat
vfloorf
(vFloat
x);
void
vvfloorf
(float
*y, const float *x, const int
*n);
void
vvfloor
(double
*y, const double *x, const int
*n);
The floor
() functions conform to ISO/IEC
9899:2011.
December 11, 2006 | macOS 14.6 |