intersection_tinstant_tinstant tboolinst_in tboolinst_make tfloatinst_in tfloatinst_make tfloatinst_spanset tfloatinst_to_tintinst tgeogpointinst_in tgeogpointinst_make tgeompointinst_in tgeompointinst_make tinstant_always_eq tinstant_always_le tinstant_always_lt tinstant_cmp tinstant_copy tinstant_eq tinstant_ever_eq tinstant_ever_le tinstant_ever_lt tinstant_hash tinstant_in tinstant_instants tinstant_make tinstant_merge tinstant_merge_array tinstant_out tinstant_restrict_period tinstant_restrict_periodset tinstant_restrict_periodset_test tinstant_restrict_timestamp tinstant_restrict_timestampset tinstant_restrict_timestampset_test tinstant_restrict_value tinstant_restrict_values tinstant_restrict_values_test tinstant_sequences tinstant_set tinstant_set_period tinstant_shift tinstant_time tinstant_timestamps tinstant_to_string tinstant_value tinstant_value_at_timestamp tinstant_value_copy tinstant_values tintinst_in tintinst_make tintinst_to_tfloatinst tnumberinst_double tnumberinst_restrict_span tnumberinst_restrict_span_test tnumberinst_restrict_spanset tnumberinst_restrict_spanset_test tsequence_to_tinstant tsequenceset_to_tinstant ttextinst_in ttextinst_make

tnumberinst_double() double tnumberinst_double ( const TInstant *  inst ) Convert the value of temporal number instant to a double.