<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji"}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;padding-left:1.5rem;max-width:60rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{line-height:2.25rem;font-size:1.5rem;font-weight:500}@media (width <= 720px){.h2{line-height:1.5rem;font-size:1.25rem}}#challenge-error-text{background-image:url("data:image/svg+xml;base64,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");background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme: dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="360"></head><body><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt = {cvId: '3',cZone: 'sourceforge.net',cType: 'managed',cRay: '95ddecd476c2eb64',cH: 'aQzJu1jQqWlEoiB7KQBhfeENjXnEv2wXO6ZUemWxw30-1752295882-1.2.1.1-4Q6U9_T8ZSOVs1ggJoqIVlWzuJdv4Ibde16PP2s10VtgRLeq9hYrFRdBLsRApUWa',cUPMDTk:"\/p\/xsb\/src\/1610\/tree\/\/trunk\/XSB\/docs\/userman\/ccallingxsb.tex?__cf_chl_tk=kHYuG6ZuJUhcJ.W7YqeQ7Sd8bmlHDsDdSxeT0n20G3U-1752295882-1.0.1.1-q0YEL9aqJ8tIwcfui5pdXopVFbeA8sU8KFV7VkqG.1o",cFPWv: 'g',cITimeS: '1752295882',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/p\/xsb\/src\/1610\/tree\/\/trunk\/XSB\/docs\/userman\/ccallingxsb.tex?__cf_chl_f_tk=kHYuG6ZuJUhcJ.W7YqeQ7Sd8bmlHDsDdSxeT0n20G3U-1752295882-1.0.1.1-q0YEL9aqJ8tIwcfui5pdXopVFbeA8sU8KFV7VkqG.1o",md: 'jxLJ4WFmZaSE5cGuMErvIrs7fjB6OwPcHEhjtKOPWTE-1752295882-1.2.1.1-se.CaKOMYABLp6e.OfWzWLyA6iie13DcYYFLuq17S7DUPjXmtqm9ReG7Sl52M4_J8CEMnbsi2AreMxyFU_EOFAiT6gMNCZRTTFXPGBYCzIOzprMDIX2ObkP5Cg.125Ezocmckf.dDarHwjqBh4MFhA706hBMFiZbKdBtpeh9JLgZuGKk9GPF1AvPTxtnmia7ISd3vTGHX3vctaZcpH2FK9UOpwCKMjiisEaMtQgs3qQ_KEpUgRna1Dl9gXe4csflEeNFZNOZBkmDArjXOd5spzQ2wqu7G.AuOpMRfMkGZGyTz79RqogrFpU9fMaMI1KA1mIPFaUGVcvPrsBiQwgb9z2FD1nNHwtqNfOEsoWF2ODwmglZlbBsvCGKQoSgBQO84zXY4LqIXQj9eOQiA57.Xta0xsFj5jPbkul.EU_ssaGaQCwt_.7SOyxqTirpSxaw6f2ckPYbXSpGUEssN6sK8Ysltq7GKnAf360bFMB1NJkPaQv09h7OhasIY6JpAD15_uWU.MQoi1ibgyCtSFRp4tbv1M7N4rQefr4CZFW_yNL9J8flK6lUkAZ9oXlaqKT4xYi71lyCkdjhGfOlljlqdlNOA8uti_OWLkItuiyDCXOLww0hsJMr.WVqtc6AS3bYFHNQEGd6wyBK9qtnN.46ZZH3YqkB69LWuWnwlbFoeFcBfqtVtDYm3QHLZP4qs7r3sIHtc58uStfbxsmAzrMKtqLzPuEozcWxhhHTsXR8OtX1JRI1C.IiQHVqFPy_2wRlI4hp_kTVOM6y.ySET7Xc1rLqyBojrfqG6jog3PKbeJSjEnDxp6hUv_GHa08EMm9FOTyLhiwLy4reucAz9aUvzezUo.8CkjhM8ppSlzGH.xgMnnhqE.9qOPQrdlTirSJPDFE7b_yIlUh.wODHzgPDU0lp0EsgtN7iF1AHqPXVxLn4ugwe.i0q7T6nlODCVwGhgIUmCXROLNaOMT99TQ2i233GD0RN67YgLxPiK5IOagZN1xDCFlemjDVAzXBD8owN',mdrd: 'wgr9RdTC6puTyFvO3g9PzijjWLvPr8DeCyNgZqGDlPw-1752295882-1.2.1.1-SrZ24YlAqY8sG3ZMl5utOATPZyZ2.CRVPjRDB2bufrofdUf6uyC1PCcCgUl033x0PGstg3DvoMY6Nl4wpigJW4SaZm6susLqoVMeq6LbQmknqXFc_kUYrawCeKBN1pHe8jjy.BvfRt.wdu4urBPpedAnW7ZtG_t2LKEQKrAiLRbbSLV87VhKd1MIZgq0MnyjR1Nn1Osu5jCNmYztoaAlepdpOaXWB3_NSGiv9HnZcoZe2ll3.PRgZMrBThluCX9zIBCNKt_sAeZLHghvxz7pofyBp1YbcOxwWADfV0_n9wkbGfvyjaaSeYDknrvq4I7TDpFnXon7QcvPSlRrm0lTAB9Pu_7S7X_3qTQ8.G4PoBT0tPzKWe4dq1QqfPX.lWhkIsN8.5LiGgdeMifHy.3L3_XhA12CaUCP8mD9jQkV99xLkiXa82deCylquLzxiMCR4JG_HpsDbky.9uIfNd5gL7FB3_dE6koC743KfVvsD0KnwxllHjzr32K7OF6QJ5aF1RHqPcXNmFzXtKKUgZQsP9ltOlLTWZhEEC7F6IENEPvG9XFr9dHhG.b4mDGrEEW0huf8KwAXtWjaTy9st9Xb93QiqbQKB1wJSMK2pxj.Rejt082Ms1zsHYd4Nrt.MDOM_7DWtzg2jBR8IVmQI6QWi.SBvoNuIAKqAAWARRjQkxeVV8DSdaJKGFKFMN45fLFo00HMxBGmuyaJucsFGR3MqDK25I6E6ODpNFbMQjbqfTsY.QLpVq4dbnW_7PprkscuBN4FD6j33RiOhQpHBsK6m4uRgWp2uD7vG3PRNdmMHhJAIjDgX_5iFgs78mi8cef43w6VXbIfNlys7znIdLJNjmKtfDUNOWFnbwiHIpa9swW3kB9_XwvU_6XcOyO1ABTnoyJ7UgE.v8QEjIf9MAwTv11zGBpWYwclgxXaziiMVBR7BkQOu5aFSHnUn64mzAHYpaLCXhlP.z4LGgBud76SG7FVMtXPKI70DImTtZVqTLXaR_tDHEG76hzAAgnRujX6xuP3a4P8gAkwsSb4apPEQbQyV1E_R3v.vw7bzLo5Ux2FudBNPntZ05sMMUMmps8Fedc5FqyDf8DaPVx8MhdyP5bKoPEIZi8G0D2V0NAToP8aSc7.ZT1jXrmTPBIehoMkaibwB94Re4L2LjkuB2YXJCytgyhRYUB1dSMDLfIRefrygP_bChOwnSz1D7G6V0w_Vmv0oRmYMuPeyKAhAIQKffOdoNlKiO4lILy41sEhI2M6olgyHeYVrZ2qpogn_ZU8Ff7H3.LS5W3vZZmskQcBuHSucQkVf6XkB_r6qAi.CtB1lsu7ckQWoMYLgZZNf3o2jPS0o0n157s.BiH9hycvG_deRfExdhDuxMwZ5wEgSQibnix_RCTw9pqUk7vYAZcdZ_0XkLJ_2Y23gQL6t0YyPOH3LskjNOsSxYkQJlNGh5qXubNi5O1q8XRnLaeAXi9uYOxPpapIMFO_k6vzNoNVPtyFYBCamnv84dizCRIb5sm40u4VQBORUmWizSU3EpFoniNvJYZk8StLwfID84h3oD2J6nIK1XGGhCge07Xpwma72xnEzJ.ArCN9oD4XRTvzApw8ApUvDckRg1YE_q7vG9x4f5Ywwnyil9PJvR.s7ZJk5yfx5dwrU7uya2eCUMyhrhkaEs4XY_SfiS3qE7H0w77qZcZTAcqLWdeDyFhMmgFV3Fsi6CoJhNCfse6atxC85gSIaN8IR2hMH35hR__EeITmsSMG9_WEkhAXf2sR.2oH43SrsKLOfWbTzHtcvkMvaB8TCV6MNjazVggC.DQSePIKQf14YZP.tO0TzPZJ4czd4qsGdSV2X8aBVwmYq0hBsvLXQ5lxLjasmSpMDmkciGcoN2JiySh7N6pRjBGMcEwPgXRP6eHV95eE7xfyMNSNdV.C95P8U0S6kKUFaPiB5nQZhVxmbWCCAHM44_5I5SDaboLaJY6KHZadN2sCqjIMZZmsS7JD.p1zFxWYKryjuXMaUZ38xZR4wgT5WACJstdJpNEJokV5sbOXxTFkOA3cszR5oaoa3qJyfbnsHlVIe3Ej8JQYJrvyuKvun63e41Iyw3piGiBST2drTiUwtJeELlycfFCaUT92eM01_qPaC0rxAY00fqsIy0.tAPux3NRRU4Uc7Hq7Mxj_TigvPs8MQ8_YeRg69AoQugdAjhGWyKtn2erbuZyWpBosF4l3L0MdfRgaKsM5MUa2zLCD0DND6aD6A5lwT9jKLE_BpZLVeEzCP3Z4KVpCZiYdLmgSvgSz3jvBoCSq8TJUIksPPMZfjfSvpjap5bWEu3uRhE2mCOjyreaeTRTL6yuw3CBStWL.na0Wd0MgfdbZtb1uCSbzYxBbqhJZo0do6ltq.aJvyhkERKGKPtilYEylRCvdy_FGHIZ6jVU5S1NQTb9WmcMHGU5JeKT1cMTeJouwqxuPG7dBA.Fhw4iMAAuqsETW6AVVte1G5QktCCTh21fXFg5MHuLusfNq.HaldJItON5n8op0k.5xrxJWGcZOx4dZftBSpGWPeS53d5uiXFBu6S8nNMzdHhUPnt9gIXghz9MMjOGCF4XN.J7ALrBimReuQM93J9280_EuoANzQXtJrrrA',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=95ddecd476c2eb64';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null,"\/p\/xsb\/src\/1610\/tree\/\/trunk\/XSB\/docs\/userman\/ccallingxsb.tex?__cf_chl_rt_tk=kHYuG6ZuJUhcJ.W7YqeQ7Sd8bmlHDsDdSxeT0n20G3U-1752295882-1.0.1.1-q0YEL9aqJ8tIwcfui5pdXopVFbeA8sU8KFV7VkqG.1o"+ window._cf_chl_opt.cOgUHash);a.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(a);}());</script></body></html>