trunc man page on MacOSX

trunc man page on MacOSX

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TRUNC(3)		 BSD Library Functions Manual		      TRUNC(3)

NAME
     trunc — truncate to integer value

SYNOPSIS
     #include <math.h>

     double
     trunc(double x);

     long double
     truncl(long double x);

     float
     truncf(float x);

DESCRIPTION
     The trunc() functions return the integral value nearest to but no larger
     in magnitude than x.

SPECIAL VALUES
     trunc(�0) returns �0.

     trunc(�infinity) returns �infinity.

VECTOR OPERATIONS
     If you need to apply the trunc() 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 vintf(vFloat x);
     void vvintf(float *y, const float *x, const int *n);
     void vvint(double *y, const double *x, const int *n);

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

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

BSD			       December 11, 2006			   BSD

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