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helos1/libc/include/pdclib/_PDCLIB_config.h

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2021-10-10 14:39:17 +08:00
/* Internal PDCLib configuration <_PDCLIB_config.h>
("Example" platform target, for PDCLib development)
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
#ifndef _PDCLIB_CONFIG_H
#define _PDCLIB_CONFIG_H _PDCLIB_CONFIG_H
/* -------------------------------------------------------------------------- */
/* Misc */
/* -------------------------------------------------------------------------- */
/* Helper macros also documented in _PDCLIB_internal.h, but defined here as */
/* they are needed in this file already. */
/* _PDCLIB_cc( x, y ) concatenates two preprocessor tokens without extending. */
/* _PDCLIB_concat( x, y ) concatenates two preprocessor tokens with extending */
#define _PDCLIB_cc( x, y ) x ## y
#define _PDCLIB_concat( x, y ) _PDCLIB_cc( x, y )
/* 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 <stdlib.h> 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 );
/* Define this to some compiler directive that can be written after the */
/* parameter list of a function declaration to indicate the function does */
/* never return. If your compiler does not support such a directive, define */
/* to nothing. (This is to avoid warnings with the exit functions under GCC */
/* when compiling with C99/C++ settings, where C11 _Noreturn is unavailable.) */
#define _PDCLIB_NORETURN __attribute__(( noreturn ))
/* -------------------------------------------------------------------------- */
/* Symbol Visibility */
/* -------------------------------------------------------------------------- */
/* This defines _PDCLIB_PUBLIC to indicate external linkage, and _PDCLIB_LOCAL
to indicate local linkage.
*/
#ifdef _PDCLIB_STATIC_DEFINE
#define _PDCLIB_PUBLIC
#define _PDCLIB_LOCAL
#else
#if defined _WIN32 || defined __CYGWIN__
#ifdef _PDCLIB_BUILD
#ifdef __GNUC__
#define _PDCLIB_PUBLIC __attribute__ ((dllexport))
#else
#define _PDCLIB_PUBLIC __declspec(dllexport)
#endif
#else
#ifdef __GNUC__
#define _PDCLIB_PUBLIC __attribute__ ((dllimport))
#else
#define _PDCLIB_PUBLIC __declspec(dllimport)
#endif
#endif
#define _PDCLIB_LOCAL
#else
#if __GNUC__ >= 4
#define _PDCLIB_PUBLIC __attribute__ ((visibility ("default")))
#define _PDCLIB_LOCAL __attribute__ ((visibility ("hidden")))
#else
#define _PDCLIB_PUBLIC
#define _PDCLIB_LOCAL
#endif
#endif
#endif
/* -------------------------------------------------------------------------- */
/* Integers */
/* -------------------------------------------------------------------------- */
/* The defines below make use of predefines offered by GCC and clang. If you */
/* adapt PDCLib for a different compiler family, you will have to use what */
/* that compiler provides, or enter actual values. */
/* -------------------------------------------------------------------------- */
/* At the point of writing, PDCLib makes no provisions for, nor has it been */
/* tested, on a platform that uses signed magnitude or one's complement to */
/* encode its integers. Most importantly, there are no guarantees that the */
/* negative zero of those encodings is in any form handled gracefully. */
#define _PDCLIB_TWOS_COMPLEMENT 1
/* 1234 for little endian, 4321 for big endian; other types not supported. */
#define _PDCLIB_ENDIANESS __BYTE_ORDER__
/* Calculation of a minimum value from a given maximum for two's complement. */
/* (For convenience only, used only in this header file below.) */
#define _PDCLIB_MIN_CALC( max ) ( ( - max ) - 1 )
/* Now, introducting the various predefines to the _PDCLIB_* namespace, so */
/* the rest of PDCLib can work with that and adapting to a different compiler */
/* will require changes only in this one file. */
/* Bits in a char */
#define _PDCLIB_CHAR_BIT __CHAR_BIT__
/* Maximum and minimum values of signed / unsigned char */
#define _PDCLIB_SCHAR_MAX __SCHAR_MAX__
#define _PDCLIB_SCHAR_MIN _PDCLIB_MIN_CALC( __SCHAR_MAX__ )
#define _PDCLIB_UCHAR_MAX ( __SCHAR_MAX__ * 2 + 1 )
/* Whether the 'char' type is unsigned */
#ifdef __CHAR_UNSIGNED__
#define _PDCLIB_CHAR_MAX _PDCLIB_UCHAR_MAX
#define _PDCLIB_CHAR_MIN 0
#else
#define _PDCLIB_CHAR_MAX _PDCLIB_SCHAR_MAX
#define _PDCLIB_CHAR_MIN _PDCLIB_SCHAR_MIN
#endif
/* Maximum and minimum values of signed / unsigned short */
#define _PDCLIB_SHRT_MAX __SHRT_MAX__
#define _PDCLIB_SHRT_MIN _PDCLIB_MIN_CALC( __SHRT_MAX__ )
#define _PDCLIB_USHRT_MAX ( __SHRT_MAX__ * 2u + 1 )
/* Maximum and minimum values of signed / unsigned int */
#define _PDCLIB_INT_MAX __INT_MAX__
#define _PDCLIB_INT_MIN _PDCLIB_MIN_CALC( __INT_MAX__ )
#define _PDCLIB_UINT_MAX ( __INT_MAX__ * 2u + 1 )
/* Maximum and minimum values of signed / unsigned long */
#define _PDCLIB_LONG_MAX __LONG_MAX__
#define _PDCLIB_LONG_MIN _PDCLIB_MIN_CALC( __LONG_MAX__ )
#define _PDCLIB_ULONG_MAX ( __LONG_MAX__ * 2ul + 1 )
/* Maximum and minimum values of signed / unsigned long long */
#define _PDCLIB_LLONG_MAX __LONG_LONG_MAX__
#define _PDCLIB_LLONG_MIN _PDCLIB_MIN_CALC( __LONG_LONG_MAX__ )
#define _PDCLIB_ULLONG_MAX ( __LONG_LONG_MAX__ * 2ull + 1 )
/* -------------------------------------------------------------------------- */
/* <stdint.h> 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 */
/* requires the CPU to access a complete int and then mask out the char, the */
/* "usually fastest" type of at least 8 bits would be int, not char.) */
/* If you do not have information on the relative performance of the types, */
/* the standard allows you to define any type that meets minimum width and */
/* signedness requirements. */
/* The first define is the appropriate basic type (e.g. "long int"), second */
/* its max value, the third its min value (both expressed in the given type). */
/* The same follows for the unsigned type (for which the minimum value is */
/* obviously zero and need not be defined). */
/* There *are* predefines provided for the printf()/scanf() length specifiers */
/* but tunneling them through here would have added many lines of repetitive */
/* and mostly redundant defines. They are determined in <_PDCLIB_internal.h>. */
/* -------------------------------------------------------------------------- */
/* int_fast8_t / uint_fast8_t */
#define _PDCLIB_int_fast8_t __INT_FAST8_TYPE__
#define _PDCLIB_INT_FAST8_MAX __INT_FAST8_MAX__
#define _PDCLIB_INT_FAST8_MIN _PDCLIB_MIN_CALC( __INT_FAST8_MAX__ )
#define _PDCLIB_uint_fast8_t __UINT_FAST8_TYPE__
#define _PDCLIB_UINT_FAST8_MAX __UINT_FAST8_MAX__
/* int_least8_t / uint_least8_t */
#define _PDCLIB_int_least8_t __INT_LEAST8_TYPE__
#define _PDCLIB_INT_LEAST8_MAX __INT_LEAST8_MAX__
#define _PDCLIB_INT_LEAST8_MIN _PDCLIB_MIN_CALC( __INT_LEAST8_MAX__ )
#define _PDCLIB_uint_least8_t __UINT_LEAST8_TYPE__
#define _PDCLIB_UINT_LEAST8_MAX __UINT_LEAST8_MAX__
/* int_fast16_t / uint_fast16_t */
#define _PDCLIB_int_fast16_t __INT_FAST16_TYPE__
#define _PDCLIB_INT_FAST16_MAX __INT_FAST16_MAX__
#define _PDCLIB_INT_FAST16_MIN _PDCLIB_MIN_CALC( __INT_FAST16_MAX__ )
#define _PDCLIB_uint_fast16_t __UINT_FAST16_TYPE__
#define _PDCLIB_UINT_FAST16_MAX __UINT_FAST16_MAX__
/* int_least16_t / uint_least16_t */
#define _PDCLIB_int_least16_t __INT_LEAST16_TYPE__
#define _PDCLIB_INT_LEAST16_MAX __INT_LEAST16_MAX__
#define _PDCLIB_INT_LEAST16_MIN _PDCLIB_MIN_CALC( __INT_LEAST16_MAX__ )
#define _PDCLIB_uint_least16_t __UINT_LEAST16_TYPE__
#define _PDCLIB_UINT_LEAST16_MAX __UINT_LEAST16_MAX__
/* int_fast32_t / uint_fast32_t */
#define _PDCLIB_int_fast32_t __INT_FAST32_TYPE__
#define _PDCLIB_INT_FAST32_MAX __INT_FAST32_MAX__
#define _PDCLIB_INT_FAST32_MIN _PDCLIB_MIN_CALC( __INT_FAST32_MAX__ )
#define _PDCLIB_uint_fast32_t __UINT_FAST32_TYPE__
#define _PDCLIB_UINT_FAST32_MAX __UINT_FAST32_MAX__
/* int_least32_t / uint_least32_t */
#define _PDCLIB_int_least32_t __INT_LEAST32_TYPE__
#define _PDCLIB_INT_LEAST32_MAX __INT_LEAST32_MAX__
#define _PDCLIB_INT_LEAST32_MIN _PDCLIB_MIN_CALC( __INT_LEAST32_MAX__ )
#define _PDCLIB_uint_least32_t __UINT_LEAST32_TYPE__
#define _PDCLIB_UINT_LEAST32_MAX __UINT_LEAST32_MAX__
/* int_fast64_t / uint_fast64_t */
#define _PDCLIB_int_fast64_t __INT_FAST64_TYPE__
#define _PDCLIB_INT_FAST64_MAX __INT_FAST64_MAX__
#define _PDCLIB_INT_FAST64_MIN _PDCLIB_MIN_CALC( __INT_FAST64_MAX__ )
#define _PDCLIB_uint_fast64_t __UINT_FAST64_TYPE__
#define _PDCLIB_UINT_FAST64_MAX __UINT_FAST64_MAX__
/* int_least64_t / uint_least64_t */
#define _PDCLIB_int_least64_t __INT_LEAST64_TYPE__
#define _PDCLIB_INT_LEAST64_MAX __INT_LEAST64_MAX__
#define _PDCLIB_INT_LEAST64_MIN _PDCLIB_MIN_CALC( __INT_LEAST64_MAX__ )
#define _PDCLIB_uint_least64_t __UINT_LEAST64_TYPE__
#define _PDCLIB_UINT_LEAST64_MAX __UINT_LEAST64_MAX__
/* Exact-width integer types. These are *optional*. If your platform does not */
/* support types of these exact widths in two's complement encoding, just */
/* leave them undefined. */
#define _PDCLIB_int8_t __INT8_TYPE__
#define _PDCLIB_int16_t __INT16_TYPE__
#define _PDCLIB_int32_t __INT32_TYPE__
#define _PDCLIB_int64_t __INT64_TYPE__
#define _PDCLIB_uint8_t __UINT8_TYPE__
#define _PDCLIB_uint16_t __UINT16_TYPE__
#define _PDCLIB_uint32_t __UINT32_TYPE__
#define _PDCLIB_uint64_t __UINT64_TYPE__
/* INTn_C / UINTn_C macros to define int_leastN_t / uint_leastN_t literals. */
#if defined( __INT8_C )
/* GCC */
#define _PDCLIB_INT_LEAST8_C __INT8_C
#define _PDCLIB_UINT_LEAST8_C __UINT8_C
#define _PDCLIB_INT_LEAST16_C __INT16_C
#define _PDCLIB_UINT_LEAST16_C __UINT16_C
#define _PDCLIB_INT_LEAST32_C __INT32_C
#define _PDCLIB_UINT_LEAST32_C __UINT32_C
#define _PDCLIB_INT_LEAST64_C __INT64_C
#define _PDCLIB_UINT_LEAST64_C __UINT64_C
#elif defined( __INT8_C_SUFFIX__ )
/* Clang */
#define _PDCLIB_INT_LEAST8_C(c) _PDCLIB_concat( c, __INT8_C_SUFFIX__ )
#define _PDCLIB_UINT_LEAST8_C(c) _PDCLIB_concat( c, __UINT8_C_SUFFIX__ )
#define _PDCLIB_INT_LEAST16_C(c) _PDCLIB_concat( c, __INT16_C_SUFFIX__ )
#define _PDCLIB_UINT_LEAST16_C(c) _PDCLIB_concat( c, __UINT16_C_SUFFIX__ )
#define _PDCLIB_INT_LEAST32_C(c) _PDCLIB_concat( c, __INT32_C_SUFFIX__ )
#define _PDCLIB_UINT_LEAST32_C(c) _PDCLIB_concat( c, __UINT32_C_SUFFIX__ )
#define _PDCLIB_INT_LEAST64_C(c) _PDCLIB_concat( c, __INT64_C_SUFFIX__ )
#define _PDCLIB_UINT_LEAST64_C(c) _PDCLIB_concat( c, __UINT64_C_SUFFIX__ )
#else
#error Please create your own _PDCLIB_config.h. Using the existing one as-is will not work. (Unsupported *INTn_C macros.)
#endif
/* <stdlib.h> 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;
};
/* -------------------------------------------------------------------------- */
/* What follows are a couple of "special" typedefs and their limits. */
/* -------------------------------------------------------------------------- */
/* The result type of substracting two pointers */
#define _PDCLIB_ptrdiff_t __PTRDIFF_TYPE__
#define _PDCLIB_PTRDIFF_MAX __PTRDIFF_MAX__
#define _PDCLIB_PTRDIFF_MIN _PDCLIB_MIN_CALC( __PTRDIFF_MAX__ )
/* An integer type that can be accessed as atomic entity (think asynchronous */
/* interrupts). In a freestanding environment, the type itself need not be */
/* defined, but its limits must. (Don't ask.) GCC is so kind to predefine it, */
/* but clang is only giving us its MAX value, so we use that to identify the */
/* type in _PDCLIB_int.h if the type definition is unavailable. */
#ifdef __SIG_ATOMIC_TYPE__
#define _PDCLIB_sig_atomic_t __SIG_ATOMIC_TYPE__
#endif
#define _PDCLIB_SIG_ATOMIC_MAX __SIG_ATOMIC_MAX__
#define _PDCLIB_SIG_ATOMIC_MIN _PDCLIB_MIN_CALC( __SIG_ATOMIC_MAX__ )
/* Result type of the 'sizeof' operator (must be unsigned). */
/* Note: In <stdint.h>, this is taken as the base for RSIZE_MAX, the limit */
/* for the bounds-checking interfaces of Annex K. The recommendation by the */
/* standard is to use ( SIZE_MAX >> 1 ) when "targeting machines with large */
/* addess spaces", whereas small address spaces should use SIZE_MAX directly. */
#define _PDCLIB_size_t __SIZE_TYPE__
#define _PDCLIB_SIZE_MAX __SIZE_MAX__
/* Large enough an integer to hold all character codes of the widest */
/* supported locale. */
#define _PDCLIB_wchar_t __WCHAR_TYPE__
#define _PDCLIB_WCHAR_MAX __WCHAR_MAX__
#define _PDCLIB_WCHAR_MIN __WCHAR_MIN__
/* Large enough an integer to hold all character codes of the widest */
/* supported locale plus WEOF (which needs not to be equal to EOF, nor needs */
/* to be of negative value). */
#define _PDCLIB_wint_t __WINT_TYPE__
#define _PDCLIB_WINT_MAX __WINT_MAX__
#define _PDCLIB_WINT_MIN __WINT_MIN__
/* Integer types capable of taking the (cast) value of a void *, and having */
/* the value cast back to void *, comparing equal to the original. */
#define _PDCLIB_intptr_t __INTPTR_TYPE__
#define _PDCLIB_INTPTR_MAX __INTPTR_MAX__
#define _PDCLIB_INTPTR_MIN _PDCLIB_MIN_CALC( __INTPTR_MAX__ )
#define _PDCLIB_uintptr_t __UINTPTR_TYPE__
#define _PDCLIB_UINTPTR_MAX __UINTPTR_MAX__
/* Largest supported integer type. Implementation note: see _PDCLIB_atomax(). */
#define _PDCLIB_intmax_t __INTMAX_TYPE__
#define _PDCLIB_INTMAX_MAX __INTMAX_MAX__
#define _PDCLIB_INTMAX_MIN _PDCLIB_MIN_CALC( __INTMAX_MAX__ )
#define _PDCLIB_INTMAX_C __INTMAX_C
#define _PDCLIB_uintmax_t __UINTMAX_TYPE__
#define _PDCLIB_UINTMAX_MAX __UINTMAX_MAX__
#define _PDCLIB_UINTMAX_C __UINTMAX_C
/* <inttypes.h> defines imaxdiv(), which is equivalent to the div() function */
/* family (see further above) with intmax_t as basis. */
struct _PDCLIB_imaxdiv_t
{
_PDCLIB_intmax_t quot;
_PDCLIB_intmax_t rem;
};
/* -------------------------------------------------------------------------- */
/* Time types, limits, constants, and paths */
/* -------------------------------------------------------------------------- */
/* _PDCLIB_time is the type for type_t; _PDCLIB_clock for clock_t. Both types */
/* are defined as "real types capable of representing times". The "range and */
/* precision of times representable" is implementation-defined. */
/* For clock_t, the standard defines that dividing the result of clock() by */
/* CLOCKS_PER_SEC gives the seconds elapsed. */
#ifdef __CYGWIN__
#define _PDCLIB_clock_t unsigned long
#else
#define _PDCLIB_clock_t long
#endif
#define _PDCLIB_CLOCKS_PER_SEC 1000000
/* For time_t, no such divider exists. Most implementations use a count of */
/* seconds since a specified epoch. While PDCLib really should support other */
/* encodings as well, for now "count of seconds" is the only supported one. */
/* MIN / MAX values for time_t are not required by the standard (and they are */
/* not "exported" from the _PDCLIB namespace), but they are useful in support */
/* of the _tzcode implementation. */
#ifdef __MINGW64__
#define _PDCLIB_time_t long long
#define _PDCLIB_TIME_MAX __LONG_LONG_MAX__
#define _PDCLIB_TIME_MIN _PDCLIB_MIN_CALC( __LONG_LONG_MAX__ )
#else
#define _PDCLIB_time_t long
#define _PDCLIB_TIME_MAX __LONG_MAX__
#define _PDCLIB_TIME_MIN _PDCLIB_MIN_CALC( __LONG_MAX__ )
#endif
/* "Unix time" uses 1970-01-01T00:00:00 as "epoch". If your system uses a */
/* different "zero point" for its timestamps, set this to the offset between */
/* your epoch and Unix epoch. (For example, NTP uses 1900-01-01T00:00:00 as */
/* epoch, giving an offset of (70 * 365 + 17) * 86400 = 220898800 seconds.) */
#define _PDCLIB_EPOCH_BIAS INT64_C( 0 )
/* Leave this alone for now. */
#define _PDCLIB_TIME_UTC 1
/* Path to TZ data. */
/* IMPORTANT: *Must* end with separator character! */
/* It does make it much easier for the time data handling code if this detail */
/* can be relied upon and need not be handled in code. */
#define _PDCLIB_TZDIR "/usr/share/zoneinfo/"
/* Path to default (local) timezone */
#define _PDCLIB_TZDEFAULT "/etc/localtime"
/* -------------------------------------------------------------------------- */
/* Floating Point */
/* -------------------------------------------------------------------------- */
/* Whether the implementation rounds toward zero (0), to nearest (1), toward */
/* positive infinity (2), or toward negative infinity (3). (-1) signifies */
/* indeterminable rounding, any other value implementation-specific rounding. */
#define _PDCLIB_FLT_ROUNDS -1
/* Check <float.h> for explanations on each of these values. */
#define _PDCLIB_FLT_EVAL_METHOD __FLT_EVAL_METHOD__
#define _PDCLIB_FLT_HAS_SUBNORM __FLT_HAS_DENORM__
#define _PDCLIB_DBL_HAS_SUBNORM __DBL_HAS_DENORM__
#define _PDCLIB_LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__
#define _PDCLIB_FLT_RADIX __FLT_RADIX__
#define _PDCLIB_FLT_MANT_DIG __FLT_MANT_DIG__
#define _PDCLIB_DBL_MANT_DIG __DBL_MANT_DIG__
#define _PDCLIB_LDBL_MANT_DIG __LDBL_MANT_DIG__
#define _PDCLIB_FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__
#define _PDCLIB_DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__
#define _PDCLIB_LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__
#define _PDCLIB_DECIMAL_DIG __DECIMAL_DIG__
#define _PDCLIB_FLT_DIG __FLT_DIG__
#define _PDCLIB_DBL_DIG __DBL_DIG__
#define _PDCLIB_LDBL_DIG __LDBL_DIG__
#define _PDCLIB_FLT_MIN_EXP __FLT_MIN_EXP__
#define _PDCLIB_DBL_MIN_EXP __DBL_MIN_EXP__
#define _PDCLIB_LDBL_MIN_EXP __LDBL_MIN_EXP__
#define _PDCLIB_FLT_MIN_10_EXP __FLT_MIN_10_EXP__
#define _PDCLIB_DBL_MIN_10_EXP __DBL_MIN_10_EXP__
#define _PDCLIB_LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
#define _PDCLIB_FLT_MAX_EXP __FLT_MAX_EXP__
#define _PDCLIB_DBL_MAX_EXP __DBL_MAX_EXP__
#define _PDCLIB_LDBL_MAX_EXP __LDBL_MAX_EXP__
#define _PDCLIB_FLT_MAX_10_EXP __FLT_MAX_10_EXP__
#define _PDCLIB_DBL_MAX_10_EXP __DBL_MAX_10_EXP__
#define _PDCLIB_LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
#define _PDCLIB_FLT_MAX __FLT_MAX__
#define _PDCLIB_DBL_MAX __DBL_MAX__
#define _PDCLIB_LDBL_MAX __LDBL_MAX__
#define _PDCLIB_FLT_EPSILON __FLT_EPSILON__
#define _PDCLIB_DBL_EPSILON __DBL_EPSILON__
#define _PDCLIB_LDBL_EPSILON __LDBL_EPSILON__
#define _PDCLIB_FLT_MIN __FLT_MIN__
#define _PDCLIB_DBL_MIN __DBL_MIN__
#define _PDCLIB_LDBL_MIN __LDBL_MIN__
#define _PDCLIB_FLT_TRUE_MIN __FLT_DENORM_MIN__
#define _PDCLIB_DBL_TRUE_MIN __DBL_DENORM_MIN__
#define _PDCLIB_LDBL_TRUE_MIN __LDBL_DENORM_MIN__
/* Macros for deconstructing floating point values */
#define _PDCLIB_DBL_SIGN( bytes ) ( ( (unsigned)bytes[7] & 0x80 ) >> 7 )
#define _PDCLIB_DBL_DEC( bytes ) ( ( _PDCLIB_DBL_EXP( bytes ) > 0 ) ? 1 : 0 )
#define _PDCLIB_DBL_EXP( bytes ) ( ( ( (unsigned)bytes[7] & 0x7f ) << 4 ) | ( ( (unsigned)bytes[6] & 0xf0 ) >> 4 ) )
#define _PDCLIB_DBL_BIAS 1023
#define _PDCLIB_DBL_MANT_START( bytes ) ( bytes + 6 )
/* Most platforms today use IEEE 754 single precision for 'float', and double */
/* precision for 'double'. But type 'long double' varies. We use what the */
/* compiler states about LDBL_MANT_DIG to determine the type. */
#if _PDCLIB_LDBL_MANT_DIG == 64
/* Intel "Extended Precision" format, using 80 bits (64bit mantissa) */
#define _PDCLIB_LDBL_SIGN( bytes ) ( ( (unsigned)bytes[9] & 0x80 ) >> 7 )
#define _PDCLIB_LDBL_DEC( bytes ) ( ( (unsigned)bytes[7] & 0x80 ) >> 7 )
#define _PDCLIB_LDBL_EXP( bytes ) ( ( ( (unsigned)bytes[9] & 0x7f ) << 8 ) | (unsigned)bytes[8] )
#define _PDCLIB_LDBL_BIAS 16383
#define _PDCLIB_LDBL_MANT_START( bytes ) ( bytes + 7 )
#elif _PDCLIB_LDBL_MANT_DIG == 113
/* IEEE "Quadruple Precision" format, using 128 bits (113bit mantissa) */
#define _PDCLIB_LDBL_SIGN( bytes ) ( ( (unsigned)bytes[15] & 0x80 ) >> 7 )
#define _PDCLIB_LDBL_DEC( bytes ) ( ( _PDCLIB_LDBL_EXP( bytes ) > 0 ) ? 1 : 0 )
#define _PDCLIB_LDBL_EXP( bytes ) ( ( ( (unsigned)bytes[15] & 0x7f ) << 8 ) | (unsigned)bytes[14] )
#define _PDCLIB_LDBL_BIAS 16383
#define _PDCLIB_LDBL_MANT_START( bytes ) ( bytes + 13 )
#else
/* IEEE "Double Precision" format, using 64 bits (53bit mantissa,
same as DBL above) */
#define _PDCLIB_LDBL_SIGN( bytes ) ( ( (unsigned)bytes[7] & 0x80 ) >> 7 )
#define _PDCLIB_LDBL_DEC( bytes ) ( ( _PDCLIB_LDBL_EXP( bytes ) > 0 ) ? 1 : 0 )
#define _PDCLIB_LDBL_EXP( bytes ) ( ( ( (unsigned)bytes[7] & 0x7f ) << 4 ) | ( ( (unsigned)bytes[6] & 0xf0 ) >> 4 ) )
#define _PDCLIB_LDBL_BIAS 1023
#define _PDCLIB_LDBL_MANT_START( bytes ) ( bytes + 6 )
#endif
/* -------------------------------------------------------------------------- */
/* Big Integer Arithmetic */
/* -------------------------------------------------------------------------- */
/* In support of the floating point converstions required by printf() etc., */
/* PDCLib provides rudimentary big integer arithmetics. The _PDCLIB_bigint_t */
/* type stores values in a sequence of integer "digits", which may be of any */
/* uint_leastN_t type with N being 32 or 16. Note that multiplication and */
/* division require the help of the next larger type. So set the define to */
/* 32 if efficient 64bit integer arithmetics are available on your platform, */
/* and to 16 otherwise. */
/* (The value range of _PDCLIB_bigint_t is not affected by this setting.) */
#define _PDCLIB_BIGINT_DIGIT_BITS 16
/* -------------------------------------------------------------------------- */
/* Platform-dependent macros defined by the standard headers. */
/* -------------------------------------------------------------------------- */
/* The offsetof macro */
/* Contract: Expand to an integer constant expression of type size_t, which */
/* represents the offset in bytes to the structure member from the beginning */
/* of the structure. If the specified member is a bitfield, behaviour is */
/* undefined. */
/* There is no standard-compliant way to do this. */
/* This implementation casts an integer zero to 'pointer to type', and then */
/* takes the address of member. This is undefined behaviour but should work */
/* on most compilers. */
#define _PDCLIB_offsetof( type, member ) ( (size_t) &( ( (type *) 0 )->member ) )
/* Variable Length Parameter List Handling (<stdarg.h>) */
/* The macros defined by <stdarg.h> are highly dependent on the calling */
/* conventions used, and you probably have to replace them with builtins of */
/* your compiler. */
#if defined( __i386 )
/* The following generic implementation works only for pure stack-based */
/* architectures, and only if arguments are aligned to pointer type. Credits */
/* to Michael Moody, who contributed this to the Public Domain. */
/* Internal helper macro. va_round is not part of <stdarg.h>. */
#define _PDCLIB_va_round( type ) ( (sizeof(type) + sizeof(void *) - 1) & ~(sizeof(void *) - 1) )
typedef char * _PDCLIB_va_list;
#define _PDCLIB_va_arg( ap, type ) ( (ap) += (_PDCLIB_va_round(type)), ( *(type*) ( (ap) - (_PDCLIB_va_round(type)) ) ) )
#define _PDCLIB_va_copy( dest, src ) ( (dest) = (src), (void)0 )
#define _PDCLIB_va_end( ap ) ( (ap) = (void *)0, (void)0 )
#define _PDCLIB_va_start( ap, parmN ) ( (ap) = (char *) &parmN + ( _PDCLIB_va_round(parmN) ), (void)0 )
#elif defined( __x86_64 ) || defined( __arm__ ) || defined( __ARM_NEON )
/* No way to cover x86_64 or arm with a generic implementation, as it uses */
/* register-based parameter passing. Using compiler builtins here. */
typedef __builtin_va_list _PDCLIB_va_list;
#define _PDCLIB_va_arg( ap, type ) ( __builtin_va_arg( ap, type ) )
#define _PDCLIB_va_copy( dest, src ) ( __builtin_va_copy( dest, src ) )
#define _PDCLIB_va_end( ap ) ( __builtin_va_end( ap ) )
#define _PDCLIB_va_start( ap, parmN ) ( __builtin_va_start( ap, parmN ) )
#else
#error Please create your own _PDCLIB_config.h. Using the existing one as-is will not work. (Unsupported varargs.)
#endif
/* -------------------------------------------------------------------------- */
/* OS "glue", part 1 */
/* These are values and data type definitions that you would have to adapt to */
/* the capabilities and requirements of your OS. */
/* The actual *functions* of the OS interface are declared in _PDCLIB_glue.h. */
/* -------------------------------------------------------------------------- */
/* I/O ---------------------------------------------------------------------- */
/* The type of the file descriptor returned by _PDCLIB_open(), i.e. whatever */
/* the underlying kernel uses for stream identification. */
typedef int _PDCLIB_fd_t;
/* The value of type _PDCLIB_fd_t returned by _PDCLIB_open() if the operation */
/* failed. */
#define _PDCLIB_NOHANDLE ( (_PDCLIB_fd_t) -1 )
/* The default size for file buffers. Must be at least 256. */
#define _PDCLIB_BUFSIZ 1024
/* The minimum number of files the implementation guarantees can opened */
/* simultaneously. Must be at least 8. Depends largely on how the platform */
/* does the bookkeeping in whatever is called by _PDCLIB_open(). PDCLib puts */
/* no further limits on the number of open files other than available memory. */
#define _PDCLIB_FOPEN_MAX 8
/* Length of the longest filename the implementation guarantees to support. */
#define _PDCLIB_FILENAME_MAX 128
/* Maximum length of filenames generated by tmpnam(). (See tmpfile.c.) */
#define _PDCLIB_L_tmpnam 46
/* Number of distinct file names that can be generated by tmpnam(). */
#define _PDCLIB_TMP_MAX 50
/* The values of SEEK_SET, SEEK_CUR and SEEK_END, used by fseek(). */
/* Since at least one platform (POSIX) uses the same symbols for its own */
/* "seek" function, you should use whatever the host defines (if it does */
/* define them). */
#define _PDCLIB_SEEK_SET 0
#define _PDCLIB_SEEK_CUR 1
#define _PDCLIB_SEEK_END 2
/* The number of characters that can be buffered with ungetc(). The standard */
/* guarantees only one (1); PDCLib supports larger values, but applications */
/* relying on this would rely on implementation-defined behaviour (not good). */
#define _PDCLIB_UNGETCBUFSIZE 1
/* The number of functions that can be registered with atexit(). Needs to be */
/* at least 33 (32 guaranteed by the standard, plus _PDCLIB_closeall() which */
/* is used internally by PDCLib to close all open streams). */
/* TODO: Should expand dynamically. */
#define _PDCLIB_ATEXIT_SLOTS 40
/* errno -------------------------------------------------------------------- */
/* These are the values that _PDCLIB_errno can be set to by the library. */
/* */
/* By keeping PDCLib's errno in the _PDCLIB_* namespace, the library is */
/* capable of "translating" between errno values used by the hosting OS and */
/* those used and passed out by the library. */
/* */
/* Example: In the example platform, the remove() function uses the unlink() */
/* system call as backend. Linux sets its errno to EISDIR if you try to */
/* unlink() a directory, but POSIX demands EPERM. Within the remove() */
/* function, you can catch 'errno == EISDIR', and set '*_PDCLIB_errno_func() */
/* = _PDCLIB_EPERM'. Anyone using PDCLib's <errno.h> will "see" EPERM instead */
/* of EISDIR. */
/* */
/* If you do not want that kind of translation, you might want to "match" the */
/* values used by PDCLib with those used by the host OS, to avoid confusion. */
/* auxiliary/errno/errno_readout.c provides a convenience program to read */
/* those errno values mandated by the standard from a platform's <errno.h>, */
/* giving output that can readily be pasted here. */
/* Either way, note that the list below, the list in PDCLib's <errno.h>, and */
/* the list in _PDCLIB_stdinit.h, need to be kept in sync. */
/* */
/* The values below are read from a Linux system. */
/* Argument list too long */
#define _PDCLIB_E2BIG 7
/* Permission denied */
#define _PDCLIB_EACCES 13
/* Address in use */
#define _PDCLIB_EADDRINUSE 98
/* Address not available */
#define _PDCLIB_EADDRNOTAVAIL 99
/* Address family not supported */
#define _PDCLIB_EAFNOSUPPORT 97
/* Resource unavailable, try again */
#define _PDCLIB_EAGAIN 11
/* Connection already in progress */
#define _PDCLIB_EALREADY 114
/* Bad file descriptor */
#define _PDCLIB_EBADF 9
/* Bad message */
#define _PDCLIB_EBADMSG 74
/* Device or resource busy */
#define _PDCLIB_EBUSY 16
/* Operation canceled */
#define _PDCLIB_ECANCELED 125
/* No child processes */
#define _PDCLIB_ECHILD 10
/* Connection aborted */
#define _PDCLIB_ECONNABORTED 103
/* Connection refused */
#define _PDCLIB_ECONNREFUSED 111
/* Connection reset */
#define _PDCLIB_ECONNRESET 104
/* Resource deadlock would occur */
#define _PDCLIB_EDEADLK 35
/* Destination address required */
#define _PDCLIB_EDESTADDRREQ 89
/* Mathematics argument out of domain of function */
#define _PDCLIB_EDOM 33
/* File exists */
#define _PDCLIB_EEXIST 17
/* Bad address */
#define _PDCLIB_EFAULT 14
/* File too large */
#define _PDCLIB_EFBIG 27
/* Host is unreachable */
#define _PDCLIB_EHOSTUNREACH 113
/* Identifier removed */
#define _PDCLIB_EIDRM 43
/* Illegal byte sequence */
#define _PDCLIB_EILSEQ 84
/* Operation in progress */
#define _PDCLIB_EINPROGRESS 115
/* Interrupted function */
#define _PDCLIB_EINTR 4
/* Invalid argument */
#define _PDCLIB_EINVAL 22
/* I/O error */
#define _PDCLIB_EIO 5
/* Socket is connected */
#define _PDCLIB_EISCONN 106
/* Is a directory */
#define _PDCLIB_EISDIR 21
/* Too many levels of symbolic links */
#define _PDCLIB_ELOOP 40
/* File descriptor value too large */
#define _PDCLIB_EMFILE 24
/* Too many links */
#define _PDCLIB_EMLINK 31
/* Message too large */
#define _PDCLIB_EMSGSIZE 90
/* Filename too long */
#define _PDCLIB_ENAMETOOLONG 36
/* Network is down */
#define _PDCLIB_ENETDOWN 100
/* Connection aborted by network */
#define _PDCLIB_ENETRESET 102
/* Network unreachable */
#define _PDCLIB_ENETUNREACH 101
/* Too many files open in system */
#define _PDCLIB_ENFILE 23
/* No buffer space available */
#define _PDCLIB_ENOBUFS 105
/* No message is available on the STREAM head read queue */
#define _PDCLIB_ENODATA 61
/* No such device */
#define _PDCLIB_ENODEV 19
/* No such file or directory */
#define _PDCLIB_ENOENT 2
/* Executable file format error */
#define _PDCLIB_ENOEXEC 8
/* No locks available */
#define _PDCLIB_ENOLCK 37
/* Link has been severed */
#define _PDCLIB_ENOLINK 67
/* Not enough space */
#define _PDCLIB_ENOMEM 12
/* No message of the desired type */
#define _PDCLIB_ENOMSG 42
/* Protocol not available */
#define _PDCLIB_ENOPROTOOPT 92
/* No space left on device */
#define _PDCLIB_ENOSPC 28
/* No STREAM resources */
#define _PDCLIB_ENOSR 63
/* Not a STREAM */
#define _PDCLIB_ENOSTR 60
/* Function not supported */
#define _PDCLIB_ENOSYS 38
/* The socket is not connected */
#define _PDCLIB_ENOTCONN 107
/* Not a directory */
#define _PDCLIB_ENOTDIR 20
/* Directory not empty */
#define _PDCLIB_ENOTEMPTY 39
/* State not recoverable */
#define _PDCLIB_ENOTRECOVERABLE 131
/* Not a socket */
#define _PDCLIB_ENOTSOCK 88
/* Not supported */
#define _PDCLIB_ENOTSUP 95
/* Inappropriate I/O control operation */
#define _PDCLIB_ENOTTY 25
/* No such device or address */
#define _PDCLIB_ENXIO 6
/* Operation not supported on socket */
#define _PDCLIB_EOPNOTSUPP 95
/* Value too large to be stored in data type */
#define _PDCLIB_EOVERFLOW 75
/* Previous owner died */
#define _PDCLIB_EOWNERDEAD 130
/* Operation not permitted */
#define _PDCLIB_EPERM 1
/* Broken pipe */
#define _PDCLIB_EPIPE 32
/* Protocol error */
#define _PDCLIB_EPROTO 71
/* Protocol not supported */
#define _PDCLIB_EPROTONOSUPPORT 93
/* Protocol wrong type for socket */
#define _PDCLIB_EPROTOTYPE 91
/* Result too large */
#define _PDCLIB_ERANGE 34
/* Read-only file system */
#define _PDCLIB_EROFS 30
/* Invalid seek */
#define _PDCLIB_ESPIPE 29
/* No such process */
#define _PDCLIB_ESRCH 3
/* Stream ioctl() timeout */
#define _PDCLIB_ETIME 62
/* Connection timed out */
#define _PDCLIB_ETIMEDOUT 110
/* Text file busy */
#define _PDCLIB_ETXTBSY 26
/* Operation would block */
#define _PDCLIB_EWOULDBLOCK 11
/* Cross-device link */
#define _PDCLIB_EXDEV 18
/* The highest defined errno value, plus one. This is used to set the size */
/* of the array in struct _PDCLIB_lc_text_t holding error messages for the */
/* strerror() and perror() functions. (If you change this value because you */
/* are using additional errno values, you *HAVE* to provide appropriate error */
/* messages for *ALL* locales.) */
#define _PDCLIB_ERRNO_MAX 132
/* The error message used for unknown error codes (generated by errno_readout */
/* for consistency between the 'holes' in the list of defined error messages */
/* and the text generated by e.g. strerror() for out-of-range error values.) */
#define _PDCLIB_EUNKNOWN_TEXT (char*)"unknown error"
/* locale data -------------------------------------------------------------- */
/* The default path where PDCLib should look for its locale data. */
/* Must end with the appropriate separator character. */
#define _PDCLIB_LOCALE_PATH "/usr/share/pdclib/i18n/"
/* The name of the environment variable that can be used to override that */
/* path setting. */
#define _PDCLIB_LOCALE_PATH_ENV PDCLIB_I18N
#ifdef __CYGWIN__
typedef unsigned int wint_t;
#endif
/* threads ------------------------------------------------------------------ */
/* This is relying on underlying <pthread.h> implementation to provide thread */
/* support. */
/* The problem here is we cannot just #include <pthread.h> and access the */
/* original definitions. The standard library must not drag identifiers into */
/* the user's namespace, so we have to set our own definitions in the _PDCLIB */
/* namespace. Which are, obviously, platform-specific. */
/* If you do NOT want to provide threads support, define __STDC_NO_THREADS__ */
/* to 1 and simply delete the threads.h header and the corresponding files in */
/* functions/threads/. This makes PDCLib non-thread-safe (obviously), as the */
/* safeguards against race conditions (e.g. in <stdio.h>) will be omitted. */
/* auxiliary/pthread/pthread_readout.c provides a convenience program to read */
/* appropriate definitions from a platform's <pthread.h>, giving output that */
/* can be copy & pasted here. */
typedef unsigned long int _PDCLIB_thrd_t;
typedef union { unsigned char _PDCLIB_cnd_t_data[ 48 ]; long long int _PDCLIB_cnd_t_align; } _PDCLIB_cnd_t;
#if defined( __arm__ ) || defined( __ARM_NEON )
typedef union { unsigned char _PDCLIB_mtx_t_data[ 24 ]; long int _PDCLIB_mtx_t_align; } _PDCLIB_mtx_t;
#else
typedef union { unsigned char _PDCLIB_mtx_t_data[ 40 ]; long int _PDCLIB_mtx_t_align; } _PDCLIB_mtx_t;
#endif
typedef unsigned int _PDCLIB_tss_t;
typedef int _PDCLIB_once_flag;
#define _PDCLIB_ONCE_FLAG_INIT 0
#define _PDCLIB_RECURSIVE_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
/* This one is actually hidden in <limits.h>, and only if __USE_POSIX is */
/* defined prior to #include <limits.h> (PTHREAD_DESTRUCTOR_ITERATIONS). */
#define _PDCLIB_TSS_DTOR_ITERATIONS 4
/* The following are not made public in any header, but used internally for */
/* interfacing with the pthread API. */
typedef union { unsigned char _PDCLIB_cnd_attr_t_data[ 4 ]; int _PDCLIB_cnd_attr_t_align; } _PDCLIB_cnd_attr_t;
typedef union { unsigned char _PDCLIB_mtx_attr_t_data[ 4 ]; int _PDCLIB_mtx_attr_t_align; } _PDCLIB_mtx_attr_t;
#if defined( __arm__ ) || defined( __ARM_NEON )
typedef union { unsigned char _PDCLIB_thrd_attr_t_data[ 36 ]; long int _PDCLIB_thrd_attr_t_align; } _PDCLIB_thrd_attr_t;
#else
typedef union { unsigned char _PDCLIB_thrd_attr_t_data[ 56 ]; long int _PDCLIB_thrd_attr_t_align; } _PDCLIB_thrd_attr_t;
#endif
/* Static initialization of recursive mutex. */
#if defined( __arm__ ) || defined( __ARM_NEON )
#define _PDCLIB_MTX_RECURSIVE_INIT { {\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }
/* Static initialization of plain / timeout mutex (identical with pthread). */
#define _PDCLIB_MTX_PLAIN_INIT { {\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }
#else
#define _PDCLIB_MTX_RECURSIVE_INIT { {\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }
/* Static initialization of plain / timeout mutex (identical with pthread). */
#define _PDCLIB_MTX_PLAIN_INIT { {\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }
#endif
/* Termux defines atexit in crtbegin_so.o leading to a multiple definition */
/* error from the linker. This is a crude workaround, which does NOT fix */
/* various run-time issues on Termux likely also related to crt linkage. But */
/* at least things compile OK, and SOME tests can be run. */
#if defined( __ARM_NEON )
#define atexit _PDCLIB_atexit
#endif
#endif
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