The array math routines are a part of the Compaq Extended Math Library (CXML). This includes a set of standard mathematical functions operating on an array. On superscalar architectures, operating on an array of data provides significantly better performance than a loop of scalar operations. The following routines are included in array-math. The Subprogram Name is the name of the manual page containing documentation on the subprogram. Subprogram Name Operation vsqrt Calculates, in double-precision arithmetic, the square root of N elements of a vector. vcos Calculates, in double-precision arithmetic, the cosine of N elements of a vector. vsin Calculates, in double-precision arithmetic, the sine of N elements of a vector. vrecip Calculates, in double-precision arithmetic, the reciprocal of N elements of a vector. vlog Calculates, in double-precision arithmetic, the natural logarithm of N elements of a vector. vexp Calculates, in double-precision arithmetic, the exponential function of N elements of a vector. vcos_sin Calculates, in double-precision arithmetic, the sine and cosine of N elements of a vector.