;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2024 Rodion Goritskov <rodion.goritskov@gmail.com>
;;; Copyright © 2024 Sharlatan Hellseher <sharlatanus@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages golang-maths)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix build-system go)
  #:use-module (guix gexp)
  #:use-module (guix git-download)
  #:use-module (guix packages)
  #:use-module (gnu packages)
  #:use-module (gnu packages golang-build))

;;; Commentary:
;;;
;;; Please: Try to add new module packages in alphabetic order.
;;;
;;; Code:

;;;
;;; Libraries:
;;;

(define-public go-github-com-aclements-go-moremath
  (package
    (name "go-github-com-aclements-go-moremath")
    (version "0.0.0-20241023150245-c8bbc672ef66")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/aclements/go-moremath")
             (commit (go-version->git-ref version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "01c9fkjs6gx7z6qkzy9qld7q3jhi9vgqhk8ymqck3ccmhg9bh1nq"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/aclements/go-moremath"
      #:phases
      #~(modify-phases %standard-phases
          ;; No Go files in project root.
          (delete 'build))))
    (propagated-inputs
     (list go-gonum-org-v1-gonum))
    (home-page "https://github.com/aclements/go-moremath")
    (synopsis "Assortment of more specialized math routines for Golang")
    (description
     "These packages provide more specialized math routines than are available
in the standard Go @code{math} package.  go-moremath currently focuses on
statistical routines, with particular focus on high-quality implementations
and APIs for non-parametric methods.")
    (license license:bsd-3)))

(define-public go-github-com-cockroachdb-apd
  (package
    (name "go-github-com-cockroachdb-apd")
    (version "1.1.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/cockroachdb/apd")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "14jnnqpdsa3vxh2zpznd2dpnychcrlkljppfplrigrs245slyh72"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/cockroachdb/apd"))
    (propagated-inputs
     (list go-github-com-pkg-errors))
    (home-page "https://github.com/cockroachdb/apd")
    (synopsis "Arbitrary-precision decimals for Golang")
    (description
     "This package implements much of the decimal specification from the
@url{http://speleotrove.com/decimal/,General Decimal Arithmetic} description.
This is the same specification implemented by
@url{https://docs.python.org/2/library/decimal.html,Python’s decimal module}
and GCC’s decimal extension.")
    (license license:asl2.0)))

(define-public go-github-com-cockroachdb-apd-v3
  (package
    (inherit go-github-com-cockroachdb-apd)
    (name "go-github-com-cockroachdb-apd-v3")
    (version "3.2.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/cockroachdb/apd")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1jrb43l80mr8q1hx8q4p54rld6kya886ackv5yzqyhhhl271rnm6"))))
    (arguments
     (list
      #:import-path "github.com/cockroachdb/apd/v3"))))

(define-public go-github-com-johncgriffin-overflow
  (package
    (name "go-github-com-johncgriffin-overflow")
    (version "0.0.0-20211019200055-46fa312c352c")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/JohnCGriffin/overflow")
             (commit (go-version->git-ref version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1g4sfhdmzjl5vr16lfv7nv042w8dbz608bwzyvf7xlw4i7ypjjpq"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/JohnCGriffin/overflow"
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'generate-impl
            ;; Note that because Go has no template types, the majority of
            ;; repetitive code is generated by overflow_template.sh.  If you
            ;; have to change an algorithm, change it there and regenerate the
            ;; Go code.
            (lambda* (#:key import-path #:allow-other-keys)
              (with-directory-excursion (string-append "src/" import-path)
                (substitute* "overflow_template.sh"
                  (("/bin/sh") (which "sh")))
                (make-file-writable "overflow_impl.go")
                (invoke "./overflow_template.sh")
                (invoke "go" "generate")))))))
    (home-page "https://github.com/JohnCGriffin/overflow")
    (synopsis "Check for int/int64/int32 arithmetic overflow in Golang")
    (description
     "This package offers overflow-checked integer arithmetic operations for
@code{int},@code{int32}, and @code{int64}.  Each of the operations returns a
@code{result,bool} combination.  This was prompted by the need to know when to
flow into higher precision types from the @code{math.big} library.")
    ;; It's in README, see <https://github.com/JohnCGriffin/overflow/pull/5>.
    (license license:expat)))

(define-public go-github-com-montanaflynn-stats
  (package
    (name "go-github-com-montanaflynn-stats")
    (version "0.7.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/montanaflynn/stats")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0y38cvp7r6fb6291k82j781dbykx00mxw8ca0v9d0fijzc1x81fi"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/montanaflynn/stats"
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'remove-examples
            (lambda* (#:key tests? import-path #:allow-other-keys)
              (with-directory-excursion (string-append "src/" import-path)
                (delete-file-recursively "examples")))))))
    (home-page "https://github.com/montanaflynn/stats")
    (synopsis "Statistics library for Golang")
    (description
     "This package provides a statistical library for Golang.")
    (license license:expat)))

(define-public go-github-com-remyoudompheng-bigfft
  (package
    (name "go-github-com-remyoudompheng-bigfft")
    (version "0.0.0-20230129092748-24d4a6f8daec")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/remyoudompheng/bigfft")
             (commit (go-version->git-ref version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0qxfda0jq70ank99zlgfz7iig2jpicbbxnpr7xcf1v9p474ak2dx"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/remyoudompheng/bigfft"))
    (home-page "https://github.com/remyoudompheng/bigfft")
    (synopsis "Big integer multiplication library for using Fast Fourier transform")
    (description
     "Package bigfft implements multiplication of @code{big.Int} using
FFT (Schonhage-Strassen method for multiplying integers).")
    (license license:bsd-3)))

(define-public go-github-com-shopspring-decimal
  (package
    (name "go-github-com-shopspring-decimal")
    (version "1.4.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/shopspring/decimal")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1p1iz0ybsjvc8k3w6lf92drs51fgrcbz0ib1p4ihp3gmdq5rnzjk"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/shopspring/decimal"))
    (home-page "https://github.com/shopspring/decimal")
    (synopsis "Arbitrary-precision fixed-point decimal numbers in Golang")
    (description
     "Package decimal implements an arbitrary precision fixed-point decimal.
Features:
@itemize
@item the zero-value is 0, and is safe to use without initialization
@item addition, subtraction, multiplication with no loss of precision
@item division with specified precision
@item database/sql serialization/deserialization
@item JSON and XML serialization/deserialization
@end itemize")
    (license license:expat)))

(define-public go-github-com-x448-float16
  (package
    (name "go-github-com-x448-float16")
    (version "0.8.4")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/x448/float16")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0qg6ya30fra20hpa2qzqqzs8l95lvw9yzd87fdzq195xqi6crb2l"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "github.com/x448/float16"))
    (home-page "https://github.com/x448/float16")
    (synopsis "Float16 (Binary16) in Golang")
    (description
     "This package provides a
@url{https://en.wikipedia.org/wiki/Half-precision_floating-point_format,IEEE
754 half-precision floating-point format (binary16)} with IEEE 754 default
rounding for conversions.  IEEE 754-2008 refers to this 16-bit floating-point
format as binary16.")
    (license license:expat)))

(define-public go-gonum-org-v1-gonum
  (package
    (name "go-gonum-org-v1-gonum")
    (version "0.15.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/gonum/gonum")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "002qsavnylj8l4ki56narpn3zm0r9p7p8ccgd20q1xp751wg2kvp"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "gonum.org/v1/gonum"
      #:test-subdirs
      #~(list "."
              "blas/..."
              "cmplxs/..."
              "diff/..."
              "dsp/fourier/..."
              "floats/..."
              "integrate/..."
              "internal/..."
              "interp/..."
              "lapack/..."
              "mat/..."
              "mathext/..."
              "num/..."
              "optimize/..."
              "spatial/..."
              "stat/..."
              "uniti/...")))
    (propagated-inputs
     (list go-github-com-goccmack-gocc
           go-github-com-google-go-cmp
           go-golang-org-x-exp
           go-golang-org-x-tools
           #;go-gonum-org-v1-plot ; not packed yet
           ))
    (home-page "https://www.gonum.org/")
    (synopsis "Set of numeric libraries for Golang")
    (description
     "Gonum is a set of packages designed to make writing numerical and
scientific algorithms productive, performant, and scalable.  It provides
libraries for matrices and linear algebra; statistics, probability
distributions, and sampling; tools for function differentiation,integration,
and optimization; network creation and analysis")
    (license license:expat)))

(define-public go-lukechampine-com-uint128
  (package
    (name "go-lukechampine-com-uint128")
    (version "1.3.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/lukechampine/uint128")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1yy6lbprrsl9gscxn4194kr5sfvgi9cgvjdxn2141k36ab3nz8ip"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "lukechampine.com/uint128"))
    (home-page "https://github.com/lukechampine/uint128")
    (synopsis "Uint128 for Golang")
    (description
     "This package provides a high-performance @code{Uint128} type that
supports standard arithmetic operations.  Unlike @code{math/big}, operations
on @code{Uint128} values always produce new values instead of modifying a
pointer receiver.  A @@code{Uint128} value is therefore immutable, just like
@code{uint64} and friends.")
    (license license:expat)))

(define-public go-modernc-org-mathutil
  (package
    (name "go-modernc-org-mathutil")
    (version "1.6.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://gitlab.com/cznic/mathutil")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0wafxarpfvys5p2wsamadkv8j54ahrv9dwmlba9xsxb85n4q9ywm"))))
    (build-system go-build-system)
    (arguments
     (list
      #:import-path "modernc.org/mathutil"))
    (propagated-inputs (list go-github-com-remyoudompheng-bigfft))
    (home-page "https://modernc.org/mathutil")
    (synopsis
     "Utilities supplemental to the Go standard @code{rand} and @code{math} packages")
    (description
     "Package mathutil provides utilities supplementing the standard
@code{math} and @code{math/rand} packages.")
    (license license:bsd-3)))

;;;
;;; Executables:
;;;

;;;
;;; Avoid adding new packages to the end of this file. To reduce the chances
;;; of a merge conflict, place them above in alphabetic order.
;;;