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FLOOR(3)                 BSD Library Functions Manual                 FLOOR(3)

NAME
     floor -- round to largest integral value not greater than x

SYNOPSIS
     #include <math.h>

     double
     floor(double x);

     long double
     floorl(long double x);

     float
     floorf(float x);

DESCRIPTION
     The floor() functions return the largest integral value less than or equal to x.

SPECIAL VALUES
     floor(+-_) returns +-0.

     floor(+-infinity) returns +-infinity.

VECTOR OPERATIONS
     If you need to apply the floor() function to SIMD vectors or arrays, using the following functions pro-vided provided
     vided 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);

SEE ALSO
     ceil(3), round(3), trunc(3), math(3)

STANDARDS
     The floor() functions conform to ISO/IEC 9899:2011.

BSD                            December 11, 2006                           BSD