X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=internals%2F_PDCLIB_config.h;h=d2188ff112f8657124884bf3b54dd700138fa2ca;hb=e25ac2ecee6251afcec84e08165e454fb6bc256c;hp=74eb290286d8178ca66e6cbb5b0db8fc1af7e286;hpb=02c1ddcae6c88b55d2f4de825ee6c6456150b8ae;p=pdclib diff --git a/internals/_PDCLIB_config.h b/internals/_PDCLIB_config.h index 74eb290..d2188ff 100644 --- a/internals/_PDCLIB_config.h +++ b/internals/_PDCLIB_config.h @@ -16,6 +16,18 @@ /* The character (sequence) your platform uses as newline. */ #define _PDCLIB_endl "\n" +/* exit() can signal success to the host environment by the value of zero or */ +/* the constant EXIT_SUCCESS. Failure is signaled by EXIT_FAILURE. Note that */ +/* any other return value is "implementation-defined", i.e. your environment */ +/* is not required to handle it gracefully. Set your definitions here. */ +#define _PDCLIB_SUCCESS 0 +#define _PDCLIB_FAILURE -1 + +/* qsort() in requires a function that swaps two memory areas. */ +/* Below is a naive implementation that can be improved significantly for */ +/* specific platforms, e.g. by swapping int instead of char. */ +#define _PDCLIB_memswp( i, j, size ) char tmp; do { tmp = *i; *i++ = *j; *j++ = tmp; } while ( --size ); + /* -------------------------------------------------------------------------- */ /* Integers */ /* -------------------------------------------------------------------------- */ @@ -39,6 +51,30 @@ #define _PDCLIB_LONG_BYTES 4 #define _PDCLIB_LLONG_BYTES 8 +/* defines the div() function family that allows taking quotient */ +/* and remainder of an integer division in one operation. Many platforms */ +/* support this in hardware / opcode, and the standard permits ordering of */ +/* the return structure in any way to fit the hardware. That is why those */ +/* structs can be configured here. */ + +struct _PDCLIB_div_t +{ + int quot; + int rem; +}; + +struct _PDCLIB_ldiv_t +{ + long int quot; + long int rem; +}; + +struct _PDCLIB_lldiv_t +{ + long long int quot; + long long int rem; +}; + /* -------------------------------------------------------------------------- */ /* defines a set of integer types that are of a minimum width, and */ /* "usually fastest" on the system. (If, for example, accessing a single char */ @@ -98,6 +134,7 @@ #define _PDCLIB_intptr int #define _PDCLIB_INTPTR INT +/* Largest supported integer type. Implementation note: see _PDCLIB_atomax(). */ #define _PDCLIB_intmax long long int #define _PDCLIB_INTMAX LLINT /* You are also required to state the literal suffix for the intmax type */