Add constant pi divided by four

[chrisdamba]

Resolves #76 .

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Description

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This pull request:

• is work done on RFC: add constant pi divided by four RFC: add constant pi divided by four #76

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves RFC: add constant pi divided by four #76

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@stdlib-js/reviewers

[kgryte]

@chrisdamba Everything looks good. Would you mind amending the commit message to

Add constant pi divided by four

as we are adding a feature, rather than explicitly making a patch.

You should be able to git commit --amend locally and then force push. I believe this should update the PR. No need to resubmit a new PR.

Once done, should be clear to merge. Thanks!