Add math/py-reals: Lightweight python3 library for arithmetic with real numbers

math/Makefile

@@ -968,6 +968,7 @@
     SUBDIR += py-qdldl
     SUBDIR += py-quadprog
     SUBDIR += py-random2
+    SUBDIR += py-reals
     SUBDIR += py-rectangle-packer
     SUBDIR += py-roman
     SUBDIR += py-rpy2

math/py-reals/Makefile

@@ -0,0 +1,19 @@
+PORTNAME=	reals
+PORTVERSION=	0.0.4
+CATEGORIES=	math python
+MASTER_SITES=	CHEESESHOP
+PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
+
+MAINTAINER=	lwhsu@FreeBSD.org
+COMMENT=	Lightweight python3 library for arithmetic with real numbers
+WWW=		https://github.com/rubenvannieuwpoort/reals
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+USES=		python:3.10+
+USE_PYTHON=	autoplist distutils
+
+NO_ARCH=	yes
+
+.include <bsd.port.mk>

math/py-reals/distinfo

@@ -0,0 +1,3 @@
+TIMESTAMP = 1665974950
+SHA256 (reals-0.0.4.tar.gz) = ce6f23006e2d47685273d5f33ac829037d6912339f1b2f704f1524e926f826dc
+SIZE (reals-0.0.4.tar.gz) = 15407

math/py-reals/pkg-descr

@@ -0,0 +1,15 @@
+Reals is a lightweight Python library for arbitrary precision arithmetic. It
+allows you to compute approximations to an arbitrary degree of precision, and,
+contrary to most other libraries, guarantees that all digits it displays are
+correct. It works by using interval arithmetic and continued fractions. The
+bulk of this code is based on Bill Gosper's notes on continued fractions in
+which he presents algorithms for doing arithmetic on continued fractions.
+
+The reals library is characterized by:
+
+  * Correctness; the reals library uses interval arithmetic to ensure that all
+    the digits are correct.
+  * Calculations are done in a streaming way; the result of previous
+    calculations can be re-used.
+  * Uses no external libraries.
+  * Focus on usability.