Sine and Cosine Accuracy

[Gabriel Dos Reis]

Scott Robert Ladd <scott.ladd@coyotegulch.com> writes:

| Richard Henderson wrote:
| > On Thu, May 26, 2005 at 10:34:14AM -0400, Scott Robert Ladd wrote:
| > 
| >>    static const double range = PI; // * 2.0;
| >>    static const double incr  = PI / 100.0;
| > 
| > 
| > The trig insns fail with large numbers; an argument
| > reduction loop is required with their use.
| 
| Yes, but within the defined mathematical ranges for sine and cosine --
| [0, 2 * PI) -- 

this is what they call "post-modern maths"?

[...]

| I've never quite understood the necessity for performing trig operations
| on excessively large values, but perhaps my problem domain hasn't
| included such applications.

The world is flat; I never quite understood the necessity of spherical
trigonometry.

-- Gaby