pbdBASE (version 0.5-3)

base.nbd: Next Best Divisor

Description

Given integers n and d, with n>d, this function finds the "next best divisor" of n which is greater than or equal to d.

Usage

base.nbd(n, d)

Arguments

n

The divident (number divided into).

d

The candidate divisor.

Value

The "next best divisor" interger

Details

Suprisingly useful for thinking about processor grid shapes.

Examples

# NOT RUN {
spmd.code <- "
  suppressMessages(library(pbdMPI))
  suppressMessages(library(pbdBASE))
  init.grid()

  base.nbd(100, 10) # 10 divides 100, so 10 is returned
  base.nbd(100, 11) # 11 does not, so the 'next best' divisor, 20, is returned

  finalize()
"
pbdMPI::execmpi(spmd.code = spmd.code, nranks = 1L)

# }