Example programs (in the demos/src directory) 

 xairy.c         xamebsa.c       xamoeba.c       xanneal.c       xarcode.c     
 xavevar.c       xbalanc.c       xbandec.c       xbanmul.c       xbcucof.c     
 xbcuint.c       xbeschb.c       xbessi.c        xbessi0.c       xbessi1.c     
 xbessik.c       xbessj.c        xbessj0.c       xbessj1.c       xbessjy.c     
 xbessk.c        xbessk0.c       xbessk1.c       xbessy.c        xbessy0.c     
 xbessy1.c       xbeta.c         xbetai.c        xbico.c         xbnldev.c     
 xbrent.c        xbroydn.c       xbsstep.c       xcaldat.c       xchder.c      
 xchebev.c       xchebft.c       xchebpc.c       xchint.c        xcholsl.c     
 xchsone.c       xchstwo.c       xcisi.c         xcntab1.c       xcntab2.c     
 xconvlv.c       xcorrel.c       xcosft1.c       xcosft2.c       xcovsrt.c     
 xcrank.c        xcyclic.c       xdawson.c       xdbrent.c       xddpoly.c     
 xdecchk.c       xdf1dim.c       xdfpmin.c       xdfridr.c       xdftint.c     
 xdlinmin.c      xeclass.c       xeclazz.c       xei.c           xeigsrt.c     
 xelle.c         xellf.c         xellpi.c        xelmhes.c       xerfcc.c      
 xerff.c         xerffc.c        xeulsum.c       xevlmem.c       xexpdev.c     
 xexpint.c       xf1dim.c        xfactln.c       xfactrl.c       xfasper.c     
 xfgauss.c       xfit.c          xfitexy.c       xfixrts.c       xfleg.c       
 xflmoon.c       xfour1.c        xfourfs.c       xfourn.c        xfpoly.c      
 xfred2.c        xfredin.c       xfrenel.c       xfrprmn.c       xftest.c      
 xgamdev.c       xgammln.c       xgammp.c        xgammq.c        xgasdev.c     
 xgaucof.c       xgauher.c       xgaujac.c       xgaulag.c       xgauleg.c     
 xgaussj.c       xgcf.c          xgolden.c       xgser.c         xhpsel.c      
 xhpsort.c       xhqr.c          xhuffman.c      xhunt.c         xhypgeo.c     
 xicrc.c         xigray.c        xindexx.c       xirbit1.c       xirbit2.c     
 xjacobi.c       xjulday.c       xkendl1.c       xkendl2.c       xks2d1s.c     
 xks2d2s.c       xksone.c        xkstwo.c        xlaguer.c       xlfit.c       
 xlinbcg.c       xlinmin.c       xlocate.c       xlubksb.c       xludcmp.c     
 xmachar.c       xmedfit.c       xmemcof.c       xmgfas.c        xmglin.c      
 xmidpnt.c       xmiser.c        xmmid.c         xmnbrak.c       xmnewt.c      
 xmoment.c       xmppi.c         xmprove.c       xmrqcof.c       xmrqmin.c     
 xnewt.c         xodeint.c       xorthog.c       xpade.c         xpccheb.c     
 xpcshft.c       xpearsn.c       xperiod.c       xpiksr2.c       xpiksrt.c     
 xplgndr.c       xpoidev.c       xpolcoe.c       xpolcof.c       xpoldiv.c     
 xpolin2.c       xpolint.c       xpowell.c       xpredic.c       xprobks.c     
 xpsdes.c        xpzextr.c       xqgaus.c        xqrdcmp.c       xqromb.c      
 xqromo.c        xqroot.c        xqrsolv.c       xqrupdt.c       xqsimp.c      
 xqtrap.c        xquad3d.c       xran.c          xran4.c         xrank.c       
 xratint.c       xratlsq.c       xrc.c           xrd.c           xrealft.c     
 xrf.c           xrj.c           xrk4.c          xrkdumb.c       xrkqs.c       
 xrlft3.c        xrofunc.c       xrtbis.c        xrtflsp.c       xrtnewt.c     
 xrtsafe.c       xrtsec.c        xrzextr.c       xsavgol.c       xscrsho.c     
 xselect.c       xselip.c        xshell.c        xsimplx.c       xsimpr.c      
 xsinft.c        xsncndn.c       xsobseq.c       xsor.c          xsort.c       
 xsort2.c        xsort3.c        xspctrm.c       xspear.c        xsphbes.c     
 xsphfpt.c       xsplie2.c       xsplin2.c       xspline.c       xsplint.c     
 xsprsax.c       xsprsin.c       xsprspm.c       xsprstm.c       xsprstp.c     
 xsprstx.c       xstifbs.c       xstiff.c        xstoerm.c       xsvbksb.c     
 xsvdcmp.c       xsvdfit.c       xsvdvar.c       xtoeplz.c       xtptest.c     
 xtqli.c         xtrapzd.c       xtred2.c        xtridag.c       xttest.c      
 xtutest.c       xtwofft.c       xvander.c       xvegas.c        xvoltra.c     
 xwt1.c          xwtn.c          xzbrac.c        xzbrak.c        xzbrent.c     
 xzrhqr.c        xzriddr.c       xzroots.c