Man page - weighted_sum(9)

Packages contains this manual

Manual

WEIGHTED_SUM

NAME
SYNOPSIS
DESCRIPTION
FUNCTIONS
PINS
SEE ALSO

NAME

weighted_sum - convert a group of bits to an integer

SYNOPSIS

loadrt weighted_sum wsum_sizes= size[,size,...]

Creates weighted sum groups each with the given number of input bits ( size ).

DESCRIPTION

The weighted_sum converts a group of bits to an integer. The conversion is the sum of the weights of the bits that are on plus any offset. The weight of the m-th bit is 2Λ†m. This is similar to a binary coded decimal but with more options. The hold bit stops processing the input changes so the sum will not change.

The default value for each weight is 2Λ†m where m is the bit number. This results in a binary to unsigned conversion.

There is a limit of 8 weighted summers and each may have up to 16 input bits.

FUNCTIONS

process_wsums (requires a floating point thread)

Read all input values and update all output values.

PINS

wsum. N .bit. M .in bit in

The m ’th input of weighted summer n .

wsum. N .hold bit in

When TRUE, the sum output does not change. When FALSE, the sum output tracks the bit inputs according to the weights and offset.

wsum. N .sum signed out

The output of the weighted summer

wsum. N .bit. M .weight signed rw

The weight of the m ’th input of weighted summer n . The default value is 2Λ† m .

wsum. N .offset signed rw

The offset is added to the weights corresponding to all TRUE inputs to give the final sum.

SEE ALSO

scaled_s32_sums (9), sum2 (9).