NAME

vmath − include definitions for vector math routines

SYNOPSIS

#include<vmath.h>

DESCRIPTION

This file is an alternative to math.h.  In addition to all the declarations found in math.h, this file contains pragmas to the C compiler indicating those routines which have vector versions in libm, so that including this file will cause these routines to vectorize.  Without these declarations, the C compiler assumes that references to math intrinsic functions may be belong to the programmer and not those defined in libm, and hence will not vectorize them.  Use of this include file almost always requires the inclusion of libm on the link line. 

SEE ALSO

intro(3), math(5), values(5)

September 02, 1992