pbdDMAT (version 0.4-2)

math: Miscellaneous Mathematical Functions

Description

Binary operations for distributed matrix/distributed matrix and distributed matrix/vector operations.

Usage

# S4 method for ddmatrix
sqrt(x)
# S4 method for ddmatrix
abs(x)
# S4 method for ddmatrix
exp(x)
# S4 method for ddmatrix
log(x, base = exp(1))
# S4 method for ddmatrix
log2(x)
# S4 method for ddmatrix
log10(x)
# S4 method for ddmatrix
log1p(x)
# S4 method for ddmatrix
sin(x)
# S4 method for ddmatrix
cos(x)
# S4 method for ddmatrix
tan(x)
# S4 method for ddmatrix
asin(x)
# S4 method for ddmatrix
acos(x)
# S4 method for ddmatrix
atan(x)
# S4 method for ddmatrix
sinh(x)
# S4 method for ddmatrix
cosh(x)
# S4 method for ddmatrix
tanh(x)

Arguments

x

numeric distributed matrix

base

a positive number: the base with respect to which logarithms are computed. Defaults to e='exp(1)'.

Value

Returns a distributed matrix.

Details

Performs the miscellaneous mathematical calculation on a distributed matrix.

Examples

# NOT RUN {
# Save code in a file "demo.r" and run with 2 processors by
# > mpiexec -np 2 Rscript demo.r

library(pbdDMAT, quiet = TRUE)
init.grid()

# don't do this in production code
x <- matrix(1:9, 3)
x <- as.ddmatrix(x)

y <- sqrt(abs(log(x/10)))
comm.print(y)

finalize()
# }
# NOT RUN {
# }