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Name Function
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_lrotl Rotate an unsigned long left.
_lrotr Rotate an unsigned long right.
_msize Get memory block size in heap.
_rotl Rotate unsigned int left.
_rotr Rotate unsigned int right.
_tolower Convert to lowercase.
_toupper Convert to uppercase.
alloca Allocate a memory block in stack.
cabs Calculate the absolute value of complex number.
chdir Change the current directory.
close Close a file.
creat Create a file.
ecvt Convert double value to string.
eof Test the end of file.
fcvt Convert floating point value to string.
gcvt Convert floating point value and store it in a buffer.
getch Get a character from the console.
getcwd Get the current directory.
hypot Calculate the square root of the sum of two squares.
isascii Test for ASCII character.
itoa Convert an int value to a string.
kbhit Check inputting status of keyboard.
lseek Move the current file pointer.
ltoa Convert a long value to a string.
memicmp Compare two memory blocks ignoring cases.
mkdir Create a new directory.
open Open a file.
read Read data from a file.
rmdir Delete a directory.
stackavail Get available stack size.
strcmpi Compare two strings ignoring cases.
stricmp Compare two strings ignoring cases.
strlwr Convert string to lowercase.
strnicmp Compare two strings ignoring cases.
strnset Fill a string with a character.
strrev Reverse characters in a string.
strset Fill a string with a character.
strupr Convert string to uppercase.
swab Swap two bytes.
tell Get the current position of a file.
toascii Convert to a ASCII character.
ultoa Convert an unsigned long value to a string.
write Write data to a file.
btom Count characters.
chkctype Determine what the character type of the character of
interest is.
hantozen Convert a 1-byte character to the corresponding 2-byte
character.
isalkana Determine whether the character of interest is a
half-size alphabetic or katakana character.
isalnmkana Determine whether the character of interest is a
half-size alphanumeric or katakana character.
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