| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
XPG4 |
both | POSIX(ON) |
#define _XOPEN_SOURCE
#include <ctype.h>
int toascii(int c);#define _ALL_SOURCE
#include <ctype.h>
int toascii(int c);Special behavior for _XOPEN_SOURCE: The toascii() function converts its argument to a 7-bit US-ASCII character code.
The toascii() function is not intended to be used to convert EBCDIC characters to ASCII, attempts to use it in this manner will not function as expected.
Special behavior for _ALL_SOURCE: The toascii() function assumes c modulo 256 is a single-byte EBCDIC encoding for a Latin 1 character, <input-character>, in the current locale. Then, toascii() determines to what character, <output-character>, toascii() would map <input-character> in an ASCII locale (for example, on an *IX system) and returns the EBCDIC encoding for <output-character> in the current locale.
For example, if the program invoking toascii() was compiled with _ALL_SOURCE defined and if the value c input to toascii() modulo 256 is the EBCDIC encoding for <international-currency-symbol> in the current locale, toascii() returns the EBCDIC encoding for <dollar> in the current locale because toascii() maps <international-currency-symbol> to <dollar> on ASCII platforms.
/*********************************************************************/
/* */
/* IBM-1047 toascii table (sorted by ebcdic) */
/* */
/* For ISO-8859 character encoding toascii(ch) returns ch for */
/* values of ch less than 128 and ch-128 for values between */
/* 128 and 255, inclusive. Table below shows corresponding */
/* toascii(ch) equivalence for IBM-1047 character encoding */
/* of the Latin character set. */
/* */
/* IBM 1047 ISO 8859-1 */
/* Character Encoding Encoding */
/* (Symbolic Name) (Hexadecimal) (Hexadecimal) */
/* */
/* ch toascii(ch) ch toascii(ch) ch toascii(ch) */
/* */
/* <NUL> <NUL> 00 00 00 00 */
/* <SOH> <SOH> 01 01 01 01 */
/* <STX> <STX> 02 02 02 02 */
/* <ETX> <ETX> 03 03 03 03 */
/* <SEL> <IFS/IS4> 04 1C 9C 1C */
/* <HT> <HT> 05 05 09 09 */
/* <RNL> <ACK> 06 2E 86 06 */
/* <DEL> <DEL> 07 07 7F 7F */
/* <GE> <ETB> 08 26 97 17 */
/* <SPS> <CR> 09 0D 8D 0D */
/* <RPT> <SO> 0A 0E 8E 0E */
/* <VT> <VT> 0B OB 0B 0B */
/* <FF> <FF> 0C 0C 0C 0C */
/* <CR> <CR> 0D 0D 0D OD */
/* <SO> <SO> 0E 0E 0E OE */
/* <SI> <SI> 0F 0F 0F 0F */
/* <DLE> <DLE> 10 10 10 10 */
/* <DC1> <DC1> 11 11 11 11 */
/* <DC2> <DC2> 12 12 12 12 */
/* <DC3> <DC3> 13 13 13 13 */
/* <RES/ENP> <IGS/IS3> 14 1D 9D 1D */
/* <NL> <NL> 15 15 0A 0A */
/* <BS> <BS> 16 16 08 08 */
/* <POC> <BEL> 17 2F 87 07 */
/* <CAN> <CAN> 18 18 18 18 */
/* <EM> <EM> 19 19 19 19 */
/* <UBS> <DC2> 1A 12 92 12 */
/* <CU1> <SI> 1B 0F 8F 0F */
/* <IFS/IS4> <IFS/IS4> 1C 1C 1C 1C */
/* <IGS/IS3> <IGS/IS3> 1D 1D 1D 1D */
/* <IRS/IS2> <IRS/IS2> 1E 1E 1E 1E */
/* <IUS/IS1> <IUS/IS1> 1F 1F 1F 1F */
/* <DS> <NUL> 20 00 80 00 */
/* <SOS> <SOH> 21 01 81 01 */
/* <FS> <STX> 22 02 82 02 */
/* <WUS> <ETX> 23 03 83 03 */
/* <BYP/INP> <EOT> 24 37 84 04 */
/* <LF> <ENQ> 25 2D 85 05 */
/* <ETB> <ETB> 26 26 17 17 */
/* <ESC> <ESC> 27 27 1B 1B */
/* <SA> <BS> 28 16 88 08 */
/* <SFE> <HT> 29 05 89 09 */
/* <SM/SW> <NL> 2A 15 8A 0A */
/* <CSP> <VT> 2B 0B 8B 0B */
/* <MFA> <FF> 2C 0C 8C 0C */
/* <ENQ> <ENQ> 2D 2D 05 05 */
/* <ACK> <ACK> 2E 2E 06 06 */
/* <BEL> <BEL> 2F 2F 07 07 */
/* (reserved) <DLE> 30 10 90 10 */
/* (reserved) <DC1> 31 11 91 11 */
/* <SYN> <SYN> 32 32 16 16 */
/* <IR> <DC3> 33 13 93 13 */
/* <PP> <DC4> 34 3C 94 14 */
/* <TRN> <NAK> 35 3D 95 15 */
/* <NBS> <SYN> 36 32 96 16 */
/* <EOT> <EOT> 37 37 04 04 */
/* <SBS> <CAN> 38 18 98 18 */
/* <IT> <EM> 39 19 99 19 */
/* <RFF> <SUB> 3A 3F 9A 1A */
/* <CU3> <ESC> 3B 27 9B 1B */
/* <DC4> <DC4> 3C 3C 14 14 */
/* <NAK> <NAK> 3D 3D 15 15 */
/* (reserved) <IRS/IS2> 3E 1E 9E 1E */
/* <SUB> <SUB> 3F 3F 1A 1A */
/* */
/* <space> <space> 40 40 20 20 */
/* <nobrk-sp> <space> 41 40 A0 20 */
/* <a-circum> <b> 42 82 E2 62 */
/* <a-diaere> <d> 43 84 E4 64 */
/* <a-grave> <grave> 44 79 E0 60 */
/* <a-acute> <a> 45 81 E1 61 */
/* <a-tilde> <c> 46 83 E3 63 */
/* <a-ring> <e> 47 85 E5 65 */
/* <c-cedilla><g> 48 87 E7 67 */
/* <n-tilde> <q> 49 98 F1 71 */
/* <cent-sign><quote> 4A 7F A2 22 */
/* <period> <period> 4B 4B 2E 2E */
/* <lt> <lt> 4C 4C 3C 3C */
/* <l-paren> <l-paren> 4D 4D 28 28 */
/* <plus> <plus> 4E 4E 2B 2B */
/* <ver-line> <ver-line> 4F 4F 7C 7C */
/* <ampersand><ampersand> 50 50 26 26 */
/* <e-acute> <i> 51 89 E9 69 */
/* <e-circum> <j> 52 91 EA 6A */
/* <e-diaere> <k> 53 92 EB 6B */
/* <e-grave> <h> 54 88 E8 68 */
/* <i-acute> <m> 55 94 ED 6D */
/* <i-circum> <n> 56 95 EE 6E */
/* <i-diaere> <o> 57 96 EF 6F */
/* <i-grave> <l> 58 93 EC 6C */
/* <s-sharp> <underscr> 59 6D DF 5F */
/* <exclama> <exclama> 5A 5A 21 21 */
/* <dollar> <dollar> 5B 5B 24 24 */
/* <asterisk> <asterisk> 5C 5C 2A 2A */
/* <r-paren> <r-paren> 5D 5D 29 29 */
/* <semicolon><semicolon> 5E 5E 3B 3B */
/* <circum> <circum> 5F 5F 5E 5E */
/* <hyphen> <hyphen> 60 60 2D 2D */
/* <slash> <slash> 61 61 2F 2F */
/* <A-circum> <B> 62 C2 C2 42 */
/* <A-diaere> <D> 63 C4 C4 44 */
/* <A-grave> <at> 64 7C C0 40 */
/* <A-acute> <A> 65 C1 C1 41 */
/* <A-tilde> <C> 66 C3 C3 43 */
/* <A-ring> <E> 67 C5 C5 45 */
/* <C-cedilla><G> 68 C7 C7 47 */
/* <N-tilde> <Q> 69 D8 D1 51 */
/* <brok-bar> <ampersand> 6A 50 A6 26 */
/* <comma> <comma> 6B 6B 2C 2C */
/* <percent> <percent> 6C 6C 25 25 */
/* <underscr> <underscr> 6D 6D 5F 5F */
/* <gt> <gt> 6E 6E 3E 3E */
/* <question> <question> 6F 6F 3F 3F */
/* <o-stroke> <x> 70 A7 F8 78 */
/* <E-acute> <I> 71 C9 C9 49 */
/* <E-circum> <J> 72 D1 CA 4A */
/* <E-diaere> <K> 73 D2 CB 4B */
/* <E-grave> <H> 74 C8 C8 48 */
/* <I-acute> <M> 75 D4 CD 4D */
/* <I-circum> <N> 76 D5 CE 4E */
/* <I-diaere> <O> 77 D6 CF 4F */
/* <I-grave> <L> 78 D3 CC 4C */
/* <grave> <grave> 79 79 60 60 */
/* <colon> <colon> 7A 7A 3A 3A */
/* <num-sign> <num-sign> 7B 7B 23 23 */
/* <at> <at> 7C 7C 40 40 */
/* <apostro> <apostro> 7D 7D 27 27 */
/* <eq> <eq> 7E 7E 3D 3D */
/* <quote> <quote> 7F 7F 22 22 */
/* <O-stroke> <X> 80 E7 D8 58 */
/* <a> <a> 81 81 61 61 */
/* <b> <b> 82 82 62 62 */
/* <c> <c> 83 83 63 63 */
/* <d> <d> 84 84 64 64 */
/* <e> <e> 85 85 65 65 */
/* <f> <f> 86 86 66 66 */
/* <g> <g> 87 87 67 67 */
/* <h> <h> 88 88 68 68 */
/* <i> <i> 89 89 69 69 */
/* <l-guille> <plus> 8A 4E AB 2B */
/* <r-guille> <semicolon> 8B 5E BB 3B */
/* <eth> <p> 8C 97 F0 70 */
/* <y-acute> <r-brace> 8D D0 FD 7D */
/* <thorn> <tilde> 8E A1 FE 7E */
/* <plusminus><one> 8F F1 B1 31 */
/* <degree> <zero> 90 F0 B0 30 */
/* <j> <j> 91 91 6A 6A */
/* <k> <k> 92 92 6B 6B */
/* <l> <l> 93 93 6C 6C */
/* <m> <m> 94 94 6D 6D */
/* <n> <n> 95 95 6E 6E */
/* <o> <o> 96 96 6F 6F */
/* <p> <p> 97 97 70 70 */
/* <q> <q> 98 98 71 71 */
/* <r> <r> 99 99 72 72 */
/* <fem-ind> <asterisk> 9A 5C AA 2A */
/* <mas-ind> <colon> 9B 7A BA 3A */
/* <ae> <f> 9C 86 E6 66 */
/* <cedilla> <eight> 9D F8 B8 38 */
/* <AE> <F> 9E C6 C6 46 */
/* <cur-sign> <dollar> 9F 5B A4 24 */
/* <mu> <five> A0 F5 B5 35 */
/* <tilde> <tilde> A1 A1 7E 7E */
/* <s> <s> A2 A2 73 73 */
/* <t> <t> A3 A3 74 74 */
/* <u> <u> A4 A4 75 75 */
/* <v> <v> A5 A5 76 76 */
/* <w> <w> A6 A6 77 77 */
/* <x> <x> A7 A7 78 78 */
/* <y> <y> A8 A8 79 79 */
/* <z> <z> A9 A9 7A 7A */
/* <inv-excl> <exclama> AA 5A A1 21 */
/* <inv-ques> <question> AB 6F BF 3F */
/* <Eth> <P> AC D7 D0 50 */
/* <l-brk> <l-brk> AD AD 5B 5B */
/* <Thorn> <circum> AE 5F DE 5E */
/* <register> <period> AF 4B AE 2E */
/* <not-sign> <comma> B0 6B AC 2C */
/* <pound> <num-sign> B1 7B A3 23 */
/* <yen> <percent> B2 6C A5 25 */
/* <mid-dot> <seven> B3 F7 B7 37 */
/* <copyright><r-paren> B4 5D A9 29 */
/* <section> <apostro> B5 7D A7 27 */
/* <paragraph><six> B6 F6 B6 36 */
/* <1/4> <lt> B7 4C BC 3C */
/* <1/2> <eq> B8 7E BD 3D */
/* <3/4> <gt> B9 6E BE 3E */
/* <Y acute> <r-brk> BA BD DD 5D */
/* <diaeresis><l-paren> BB 4D A8 28 */
/* <macron> <slash> BC 61 AF 2F */
/* <r-brk> <r-brk> BD BD 5D 5D */
/* <acute> <four> BE F4 B4 34 */
/* <multiply> <W> BF E6 D7 57 */
/* <l-brace> <l-brace> C0 C0 7B 7B */
/* <A> <A> C1 C1 41 41 */
/* <B> <B> C2 C2 42 42 */
/* <C> <C> C3 C3 43 43 */
/* <D> <D> C4 C4 44 44 */
/* <E> <E> C5 C5 45 45 */
/* <F> <F> C6 C6 46 46 */
/* <G> <G> C7 C7 47 47 */
/* <H> <H> C8 C8 48 48 */
/* <I> <I> C9 C9 49 49 */
/* <soft-hyp> <hyphen> CA 60 AD 2D */
/* <o-circum> <t> CB A3 F4 74 */
/* <o-diaere> <v> CC A5 F6 76 */
/* <o-grave> <r> CD 99 F2 72 */
/* <o-acute> <s> CE A2 F3 73 */
/* <o-tilde> <u> CF A4 F5 75 */
/* <r-brace> <r-brace> D0 D0 7D 7D */
/* <J> <J> D1 D1 4A 4A */
/* <K> <K> D2 D2 4B 4B */
/* <L> <L> D3 D3 4C 4C */
/* <M> <M> D4 D4 4D 4D */
/* <N> <N> D5 D5 4E 4E */
/* <O> <O> D6 D6 4F 4F */
/* <P> <P> D7 D7 50 50 */
/* <Q> <Q> D8 D8 51 51 */
/* <R> <R> D9 D9 52 52 */
/* <super-1> <nine> DA F9 B9 39 */
/* <u-circum> <l-brace> DB C0 FB 7B */
/* <u-diaere> <ver_line> DC 4F FC 7C */
/* <u-grave> <y> DD A8 F9 79 */
/* <u-acute> <z> DE A9 FA 7A */
/* <y-diaere> <DEL> DF 07 FF 7F */
/* <backslash><backslash> E0 E0 5C 5C */
/* <division> <w> E1 A6 F7 77 */
/* <S> <S> E2 E2 53 53 */
/* <T> <T> E3 E3 54 54 */
/* <U> <U> E4 E4 55 55 */
/* <V> <V> E5 E5 56 56 */
/* <W> <W> E6 E6 57 57 */
/* <X> <X> E7 E7 58 58 */
/* <Y> <Y> E8 E8 59 59 */
/* <Z> <Z> E9 E9 5A 5A */
/* <super-2> <two> EA F2 B2 32 */
/* <O-circum> <T> EB E3 D4 54 */
/* <O-diaere> <V> EC E5 D6 56 */
/* <O-grave> <R> ED D9 D2 52 */
/* <O-acute> <S> EE E2 D3 53 */
/* <O-tilde> <U> EF E4 D5 55 */
/* <zero> <zero> F0 F0 30 30 */
/* <one> <one> F1 F1 31 31 */
/* <two> <two> F2 F2 32 32 */
/* <three> <three> F3 F3 33 33 */
/* <four> <four> F4 F4 34 34 */
/* <five> <five> F5 F5 35 35 */
/* <six> <six> F6 F6 36 36 */
/* <seven> <seven> F7 F7 37 37 */
/* <eight> <eight> F8 F8 38 38 */
/* <nine> <nine> F9 F9 39 39 */
/* <super-3> <three> FA F3 B3 33 */
/* <U-circum> <l-brk> FB AD DB 5B */
/* <U-diaere> <backslash> FC E0 DC 5C */
/* <U-grave> <Y> FD E8 D9 59 */
/* <U-acute> <Z> FE E9 DA 5A */
/* <EO> <IUS/IS1> FF 1F 9F 1F */
/* */
/*********************************************************************/Special behavior for _XOPEN_SOURCE: The toascii() function returns the value (c & 0x7f).
Special behavior for _ALL_SOURCE: If the current locale is not a single-byte locale (that is, mb_cur_max > 1), toascii() sets errno to ENOSYS and returns -1. Otherwise, toascii() assumes c modulo 256 is the encoding of a Latin 1 character, <input_character>, in the current locale and returns the EBCDIC encoding of the same or another Latin 1 character, <output-character>, in the current locale; where <output-character> corresponds to the character to which toascii() would map <input-character> on an ASCII platform.