gsl (version 1.2-19)

Trig: Trig functions

Description

Trig functons as per the Gnu Scientific Library, section 7.30

Usage

gsl_sf_sin(x, give=FALSE, strict=TRUE)
gsl_sf_cos(x, give=FALSE, strict=TRUE)

Arguments

x

input: real values

give

Boolean with TRUE meaning to return a list of three items: the value, an estimate of the error, and a status number.

strict

Boolean, with TRUE meaning to return NaN if status is an error.

Examples

x <- seq(from=0,to=2,by=0.01)
gsl_sf_sin(x)   #table xx of Ab and St
gsl_sf_cos(x)   #table xx of Ab and St

f <- function(x){abs(sin(x+1)-sin(x)*cos(1)-cos(x)*sin(1))}
g <-
function(x){abs(gsl_sf_sin(x+1)-gsl_sf_sin(x)*gsl_sf_cos(1)-gsl_sf_cos(x)*gsl_sf_sin(1))}

f(100000:100010)
g(100000:100010)