Motorola DSP Developer's Kit

round-r.asm

X = mot###_dspround(X)

Description

This function rounds the elements of input real vector X to the nearest integer

Input/Output

Input: Vector X (real data)

Output: Vector X

Algorithm

for(i=0; i<size; i++)
{
    if (X[i] <= -0.5)
        X[i] = -1;
    else if(X[i] >= 0.5)
        X[i] = 1;
    else
        X[i] = 0;
}

Memory & Register

X memory IN = start address of input data

X memory OUT = start address of result

Register R7 store length of input real vector X

Status Register

The assembly function round-r.asm does not explicitly set any status registers/bits during the function execution.

Data Size Limit

The length of vector X can't be larger than the continuous available data memory size.

Data Range Limit

The value of input vector X must be between -1.0 and +1.0.

min-2c.asm

round-c.asm