B Classified List of Routines

The classifications are in alphabetical order as follows:

Change case

– Change the case of a character string.

Compare strings

– Compare two character strings.

Decode Fortran data types

– Convert a character string into a Fortran data type and return its value.

Editing strings

– Edit character strings by replacing, adding or removing defined substrings.

Encode Fortran data types

– Convert a Fortran data type into a character string representation of its value.

Enquire

– Return information about a character string.

Facilitate portability

– Tools for assisting portability, especially to or from non-ASCII environments.

Search strings

– Search a character string.

B.1 Change case

CHR_LCASE

– Convert a string to lower case.

CHR_LOWER

– Return the lower case equivalent of a character.

CHR_UCASE

– Convert a string to upper case.

CHR_UPPER

– Return the upper-case equivalent of a character.

B.2 Compare strings

CHR_ABBRV

– Return whether two strings are equal apart from case, permitting abbreviation.

CHR_SCOMP

– Compare two character strings using the ASCII character set.

CHR_SIMLR

– Return whether two strings are equal, apart from case.

CHR_WILD

– Return whether a string matches a wild-card pattern.

B.3 Decode Fortran data types

CHR_BTOI

– Read an INTEGER value from a binary string.

CHR_CTOC

– Write a CHARACTER string into another string.

CHR_CTOD

– Read a DOUBLE PRECISION value from a string.

CHR_CTOI

– Read an INTEGER value from a string.

CHR_CTOL

– Read a LOGICAL value from a string.

CHR_CTOR

– Read a REAL value from a string.

CHR_HTOI

– Read an INTEGER value from a hexadecimal string.

CHR_OTOI

– Read an integer from an octal string.

B.4 Edit strings

CHR_APPND

– Copy one string into another, ignoring trailing blanks.

CHR_CLEAN

– Remove all unprintable characters from a string.

CHR_COPY

– Copy one string into another, checking for truncation.

CHR_DCWRD

– Split a string into its component words.

CHR_FILL

– Fill a string with a given character.

CHR_LDBLK

– Remove any leading blanks from a string.

CHR_LINBR

– Break a line of text into a sequence of shorter lines.

CHR_PFORM

– Reformat a paragraph to a new width.

CHR_PREFX

– Prefix a string with a substring.

CHR_RJUST

– Right-justify a string.

CHR_RMBLK

– Remove all blanks from a string.

CHR_RMCHR

– Remove all specified characters from a string.

CHR_SORT

– Sort an array of character strings into alphabetical order.

CHR_SWAP

– Swap two single-character variables.

CHR_TERM

– Terminate a string by padding out with blanks.

CHR_TRCHR

– Translate the specified characters in a string.

CHR_TRUNC

– Truncate a string at a given delimiter.

B.5 Encode Fortran data types

CHR_DTOAN

– Write a DOUBLE PRECISION value into a string as hr/deg:min:sec.

CHR_DTOC

– Write a DOUBLE PRECISION value into a string.

CHR_ITOB

– Write an INTEGER value as a binary string.

CHR_ITOC

– Write an INTEGER value as a decimal string.

CHR_ITOH

– Write an INTEGER value as a hexadecimal string.

CHR_ITOO

– Write an INTEGER value as an octal string.

CHR_LTOC

– Write a LOGICAL value into a string.

CHR_PUTC

– Put a CHARACTER string into another at a given position.

CHR_PUTD

– Put a DOUBLE PRECISION value into a string at a given position.

CHR_PUTI

– Put an INTEGER value into a string at a given position.

CHR_PUTL

– Put a LOGICAL value into a string at a given position.

CHR_PUTR

– Put a REAL value into a string at a given position.

CHR_RTOAN

– Write a REAL value into a string as hr/deg:min:sec.

CHR_RTOC

– Write a REAL value into a string.

B.6 Enquire

CHR_NTH

– Return the two-character abbreviation for a specified integer.

CHR_INSET

– Return whether a string is a member of a given set.

CHR_ISALF

– Return whether a character is alphabetic.

CHR_ISALM

– Return whether a character is alphanumeric.

CHR_ISDIG

– Return whether a character is a digit.

CHR_ISNAM

– Return whether a string is a valid name.

CHR_LEN

– Return the length of a string, ignoring trailing blanks.

B.7 Facilitate Portability

CHR_ACHR

– Return the character for a given ASCII value.

CHR_ATOK

– Return the character for a given ASCII character token.

CHR_ATOM

– Translate a string from ASCII to the machine’s character set.

CHR_ETOM

– Translate a string from EBCDIC to machine’s character set.

CHR_IACHR

– Return the ASCII value for a given character.

CHR_MTOA

– Translate a string from machine’s character set to ASCII.

CHR_MTOE

– Translate a string from machine’s character set to EBCDIC.

B.8 Search strings

CHR_DELIM

– Locate a substring using a given delimiter character.

CHR_FANDL

– Find the first and last non-blank characters in a string.

CHR_FIND

– Find the next occurrence of a given substring within a string.

CHR_FIWE

– Find the next end-of-word within a string.

CHR_FIWS

– Find the start of the next word within a string.

CHR_FPARX

– Find a parenthesised expression in a character string.

CHR_LASTO

– Find the last occurrence of character in a string.

CHR_SKCHR

– Skip over all specified characters in a string.

CHR_TOCHR

– Skip to the next specified character in a string.