[u]

1. u_int
2. u_long
3. u_quad_t
4. u_short
5. ubf_handle
6. ubf_pthread_cond_signal
7. ubf_select
8. ubf_select_each
9. udp_bind
10. udp_connect
11. udp_connect_internal
12. udp_init
13. udp_recvfrom_nonblock
14. udp_send
15. uid_t
16. uintptr_t
17. umethod_bind
18. undef_getter
19. undef_marker
20. undef_print
21. undef_setter
22. undefine_final
23. unescape_escaped_nonascii
24. unescape_nonascii
25. unescape_unicode_bmp
26. unescape_unicode_list
27. ungetc
28. unicode_escape
29. unicode_iconv
30. unicode_to_jis_common
31. unicode_to_jis_common2
32. uninit_genrand
33. uninitialized_constant
34. universal_newline
35. universal_newline_finish
36. universal_newline_infos
37. universal_newline_init
38. universal_newline_offsets
39. unix_accept
40. unix_accept_nonblock
41. unix_addr
42. unix_init
43. unix_path
44. unix_peeraddr
45. unix_recv_io
46. unix_recvfrom
47. unix_s_socketpair
48. unix_send_io
49. unix_svr_init
50. unix_sysaccept
51. unixaddr
52. unixpath
53. unixsock_connect_internal
54. unixtime_to_filetime
55. unlink
56. unlink_internal
57. unlink_undef
58. unlock_safe_array
59. unpack_entries
60. unset_addr_list_add
61. unset_addr_list_end
62. unset_addr_list_fix
63. unset_addr_list_init
64. unsetenv
65. unsigned_time_t
66. unswitch_mime_getc
67. update_char_offset
68. update_coverage
69. update_encoding_table
70. update_i
71. update_string_node_case_fold
72. url_getc
73. url_ungetc
74. us_ascii_mbc_enc_len
75. usage
76. uscore_get
77. use_cached_thread
78. username_completion_proc_call
79. utf16be_code_to_mbc
80. utf16be_code_to_mbclen
81. utf16be_get_case_fold_codes_by_str
82. utf16be_is_mbc_ambiguous
83. utf16be_is_mbc_newline
84. utf16be_left_adjust_char_head
85. utf16be_mbc_case_fold
86. utf16be_mbc_enc_len
87. utf16be_mbc_to_code
88. utf16le_code_to_mbc
89. utf16le_code_to_mbclen
90. utf16le_get_case_fold_codes_by_str
91. utf16le_is_mbc_ambiguous
92. utf16le_is_mbc_newline
93. utf16le_left_adjust_char_head
94. utf16le_mbc_case_fold
95. utf16le_mbc_enc_len
96. utf16le_mbc_to_code
97. utf32be_code_to_mbc
98. utf32be_code_to_mbclen
99. utf32be_get_case_fold_codes_by_str
100. utf32be_is_mbc_ambiguous
101. utf32be_is_mbc_newline
102. utf32be_left_adjust_char_head
103. utf32be_mbc_case_fold
104. utf32be_mbc_enc_len
105. utf32be_mbc_to_code
106. utf32le_code_to_mbc
107. utf32le_code_to_mbclen
108. utf32le_get_case_fold_codes_by_str
109. utf32le_is_mbc_ambiguous
110. utf32le_is_mbc_newline
111. utf32le_left_adjust_char_head
112. utf32le_mbc_case_fold
113. utf32le_mbc_enc_len
114. utf32le_mbc_to_code
115. utf8_islead
116. utf8_to_uv
117. utime
118. utime_internal