vec_swdivs, vec_swdivs_nochk

Purpose

Returns a vector containing the result of dividing each element of a by the corresponding element of b.

Syntax

d=vec_swdivs(a, b)
d=vec_swdivs_nochk(a, b)

Result and argument types

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

d	a	b
`vector4double`	`vector4double`	`vector4double`

For vec_swdivs_nochk, the compiler does not check the validity of the arguments. You must ensure that the following conditions are satisfied where x represents each element of a and y represents the corresponding element of b:

2^-125 ≤ |y| ≤ 2¹²⁴
If x ≠ 0
- 2^-102 ≤ |x| < Infinity
- 2^-124≤ |x / y| ≤ 2¹²⁶

Result value

The double-precision elements of a and b are first truncated to single-precision values. The result of dividing the single-precision elements of a by the corresponding single-precision elements of b is then converted to double precision and saved in the corresponding elements of the result.

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

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

Otherwise, the result might differ slightly from the IEEE division.

Formula

d[0] = (double) ( (float) a[0] / (float) b[0] )
d[1] = (double) ( (float) a[1] / (float) b[1] )
d[2] = (double) ( (float) a[2] / (float) b[2] )
d[3] = (double) ( (float) a[3] / (float) b[3] )

Example

a =  (50.0,  1.0,  30.0,  40.0)
b =  (10.0,  5.0,  -1.0,  80.0)
d: ( 5.0,  0.2, -30.0,   0.5)