vec_swsqrt, vec_swsqrt_nochk

Purpose

Returns a vector containing the square root of each element in the given vector.

Syntax

d=vec_swsqrt(a)
d=vec_swsqrt_nochk(a)

Result and argument types

The following table describes the types of the returned value and the function arguments.

For vec_swsqrt_nochk, the compiler does not check the validity of the arguments. You must ensure that the following condition is satisfied where x represents each element of a:

• 2^-969 <= x < Infinity

Result value

The result value is a quad vector that contains the square root of each element of a.

When the following options are used, the result is bitwise identical to the IEEE square root.

• -qstrict=precision
• -qstrict=ieeefp
• -qstrict=zerosigns
• -qstrict=operationprecision

Otherwise, the result might differ slightly from the IEEE square root.

Formula

d[0] = √a[0]
d[1] = √a[1]
d[2] = √a[2]
d[3] = √a[3]