math/alglib: Update 3.17.0 -> 3.18.0

Also add the 'test' target.

Reported by:	portscout

math/alglib/Makefile

@@ -1,5 +1,5 @@
 PORTNAME=	alglib
-DISTVERSION=	3.17.0
+DISTVERSION=	3.18.0
 CATEGORIES=	math science
 MASTER_SITES=	https://www.alglib.net/translator/re/
 EXTRACT_SUFX=	.cpp.gpl.zip
@@ -11,7 +11,7 @@ LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/gpl3.txt
 
 USE_LDCONFIG=	yes
-WRKSRC=		${WRKDIR}/cpp
+WRKSRC=		${WRKDIR}/${PORTNAME}-cpp
 
 do-build:
 	cd ${WRKSRC}/src && \
@@ -23,4 +23,10 @@ do-install:
 	${INSTALL_LIB} ${WRKSRC}/src/lib${PORTNAME}.so.3 ${STAGEDIR}${PREFIX}/lib
 	@${LN} -s lib${PORTNAME}.so.3 ${STAGEDIR}${PREFIX}/lib/lib${PORTNAME}.so
 
+do-test:
+	@cd ${WRKSRC} && \
+		cd tests && \
+		${CXX} ${CXXFLAGS} test_c.cpp -I ${STAGEDIR}${LOCALBASE}/include/libalglib ${STAGEDIR}${LOCALBASE}/lib/lib${PORTNAME}.so && \
+		LD_PRELOAD=${STAGEDIR}${LOCALBASE}/lib/lib${PORTNAME}.so ./a.out
+
 .include <bsd.port.mk>

math/alglib/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1609303656
-SHA256 (alglib-3.17.0.cpp.gpl.zip) = 96d61e8ad68e715dfada6aa25eef014eb14d59573809b84e3e393dbf896d40a7
-SIZE (alglib-3.17.0.cpp.gpl.zip) = 3076017
+TIMESTAMP = 1636274405
+SHA256 (alglib-3.18.0.cpp.gpl.zip) = b9045b3c569d351a6bc093ee0166cb72003aca92dc0f95cb7076d3b32dd58c0c
+SIZE (alglib-3.18.0.cpp.gpl.zip) = 3175116

math/alglib/pkg-plist

@@ -6,6 +6,9 @@ include/libalglib/diffequations.h
 include/libalglib/fasttransforms.h
 include/libalglib/integration.h
 include/libalglib/interpolation.h
+include/libalglib/kernels_avx2.h
+include/libalglib/kernels_fma.h
+include/libalglib/kernels_sse2.h
 include/libalglib/linalg.h
 include/libalglib/optimization.h
 include/libalglib/solvers.h