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14.109 VRSQRTE

Vector Reciprocal Square Root Estimate.

Syntax

VRSQRTE{cond}.datatype Qd, Qm

VRSQRTE{cond}.datatype Dd, Dm

where:

cond

is an optional condition code.

datatype

must be either U32 or F32.

Qd, Qm

are the destination vector and the operand vector,for a quadword operation.

Dd, Dm

are the destination vector and the operand vector,for a doubleword operation.

Operation

VRSQRTE finds an approximate reciprocal square root of each element in a vector, and places the results in a second vector.

Results for out-of-range inputs

The following table shows the results where input values are out of range:

Table 14-17 Results for out-of-range inputs in VRSQRTE

 Operand elementResult element
Integer <= 0x3FFFFFFF0xFFFFFFFF
Floating-pointNaN, Negative Normal, Negative InfinityDefault NaN
Negative 0, Negative DenormalNegative Infinity a
Positive 0, Positive DenormalPositive Infinity a
Positive infinityPositive 0
 Negative 0

Related reference

a 

The Division by Zero exception bit in the FPSCR (FPSCR[1]) is set

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