TMS34010 C Compiler - Al Kossow's Bitsavers

Runtime-Support Functions - Header Files
6.1.2 Character Typing and Conversion (ctype.h)
The ctype. h header declares functions that test (type) and convert characters.
For example, a character-typing function may test a character to determine
whether it is a letter, if it is a printing character, if it is a hexadecimal digit, etc.
These functions return a value of true (a nonzero value) or false (0).
The character-conversion functions convert characters to lower case, upper
case, or ASCII. These functions return the converted character.
Character-typing functions have names in the form isxxx (for example,
isdigit). Character-conversion functions have names in the form toxxx (for
example, toupper).
The ctype. h header also contains macro definitions that perform these same
operations; the macros run faster than the corresponding functions. The typing
macros expand to a lookup operation in an array of flags (this array is defined
in ctype. c). The macros have the same name as the corresponding
functions, but each macro is prefixed with an underscore (for example,
-isdigit).
6.1.3 Limits (float.h and limits.h)
The float. h and limits. h headers define macros that expand to useful
limits and parameters of the TMS3401 O's numeric representations. Table 6-1
and Table 6-2 list these macros and the limits they are associated with.
Table 6-1. Macros that Supply Integer Type Range Limits (Iimits.h)
Macro Value Description
CHAR-BIT 8 Number of bits in type char
SCHAR-MIN -128 Minimum value for a signed char
SCHAR-MAX 127 Maximum value for a signed char
UCHAR-MAX 255 Maximum value for an unsigned c!'".ar
CHAR-MIN SCHAR-MIN Minimum value for a char
CHAR-MAX SCHAR-MAX Maximum value for a char
SHRT-MIN -32768 Minimum value for a short int
SHRT-MAX 32767 Maximum value for a short int
USHRT-MAX 65535 Maximum value for an unsigned short int
INT-MIN -2147483648 Minimum value for an int
I NT-MAX 2147483647 Maximum value for an int
UINT-MAX 4294967295 Maximum value for an unsigned int
LONG-MIN -2147483648 Minimum value for a long int
LONG-MAX 2147483647 Maximum value for a long int
ULONG-MAX 4294967295 Maximum value for an unsigned long int
6-3