自学教程：C++ GUINT_TO_POINTER函数代码示例

bool read_document(PhraseLargeTable3 * phrase_table,                   FacadePhraseIndex * phrase_index,                   FILE * document,                   HashofDocument hash_of_document,                   HashofUnigram hash_of_unigram){    char * linebuf = NULL;size_t size = 0;    phrase_token_t last_token, cur_token = last_token = 0;    while ( getline(&linebuf, &size, document) ){        if ( feof(document) )            break;        if ( '/n' == linebuf[strlen(linebuf) - 1] ) {            linebuf[strlen(linebuf) - 1] = '/0';        }        TAGLIB_PARSE_SEGMENTED_LINE(phrase_index, token, linebuf);        last_token = cur_token;        cur_token = token;        /* skip null_token in second word. */        if ( null_token == cur_token )            continue;        gpointer value = NULL;        gboolean lookup_result = g_hash_table_lookup_extended            (hash_of_unigram, GUINT_TO_POINTER(cur_token),             NULL, &value);        if ( !lookup_result ){            g_hash_table_insert(hash_of_unigram, GUINT_TO_POINTER(cur_token),                                GUINT_TO_POINTER(1));        } else {            guint32 freq = GPOINTER_TO_UINT(value);            freq ++;            g_hash_table_insert(hash_of_unigram, GUINT_TO_POINTER(cur_token),                                GUINT_TO_POINTER(freq));        }        /* skip pi-gram training. */        if ( null_token == last_token ){            if ( !g_train_pi_gram )                continue;            last_token = sentence_start;        }        /* remember the (last_token, cur_token) word pair. */        HashofSecondWord hash_of_second_word = NULL;        lookup_result = g_hash_table_lookup_extended            (hash_of_document, GUINT_TO_POINTER(last_token),             NULL, &value);        if ( !lookup_result ){            hash_of_second_word = g_hash_table_new                (g_direct_hash, g_direct_equal);        } else {            hash_of_second_word = (HashofSecondWord) value;        }        value = NULL;        lookup_result = g_hash_table_lookup_extended            (hash_of_second_word, GUINT_TO_POINTER(cur_token),             NULL, &value);        guint32 count = 0;        if ( lookup_result ) {            count = GPOINTER_TO_UINT(value);        }        count ++;        g_hash_table_insert(hash_of_second_word,                            GUINT_TO_POINTER(cur_token),                            GUINT_TO_POINTER(count));        g_hash_table_insert(hash_of_document,                            GUINT_TO_POINTER(last_token),                            hash_of_second_word);    }    free(linebuf);    return true;}

static voidgstbt_wave_tab_syn_class_init (GstBtWaveTabSynClass * klass){  GObjectClass *gobject_class = (GObjectClass *) klass;  GstElementClass *element_class = (GstElementClass *) klass;  GstBtAudioSynthClass *audio_synth_class = (GstBtAudioSynthClass *) klass;  GParamSpec *pspec;  audio_synth_class->process = gstbt_wave_tab_syn_process;  audio_synth_class->setup = gstbt_wave_tab_syn_setup;  gobject_class->set_property = gstbt_wave_tab_syn_set_property;  gobject_class->get_property = gstbt_wave_tab_syn_get_property;  gobject_class->dispose = gstbt_wave_tab_syn_dispose;  // describe us  gst_element_class_set_static_metadata (element_class,      "WaveTabSyn",      "Source/Audio",      "Wavetable synthesizer", "Stefan Sauer <[email
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