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This section describes the following functions, macros and external variables:

• ieee2double - Convert floating-point number from IEEE format to /390 format
• ieee2float - Convert floating-point number from IEEE format to /390 format
• imaxabs - return integer absolute value (intmax_t)
• imaxdiv - division of integers (intmax_t)
• index - First occurrence of a character in a string
• isalnum - Test for letter or digit
• isalpha - Test for letter
• isascii - Test for ASCII character
• iscntrl - Test for control character
• isdigit - Test for digit
• isebcdic - Test for EBCDIC character
• isgraph - Test for printable character except space
• islower - Test for lowercase letter
• isprint - Test for printable character including space
• ispunct - Test for special character
• isspace - Test for white space character
• isupper - Test for uppercase letter
• iswalnum - Test for alphanumeric wide character
• iswalpha - Test for alphabetic wide character
• iswcntrl - Test for control wide character
• iswctype - Test wide character for class
• iswdigit - Test for decimal-digit wide character
• iswgraph - Test for visible wide character
• iswlower - Test for lowercase wide character
• iswprint - Test for printing wide character
• iswpunct - Test for punctuation wide character
• iswspace - Test for white-space wide character
• iswupper - Test for uppercase wide character
• iswxdigit - Test for hexadecimal wide-character digit
• isxdigit - Test for hexadecimal digit