121 строка
4.4 KiB
C
121 строка
4.4 KiB
C
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/*
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-------------------------------------------------------------------------------
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The macro `BITS64' can be defined to indicate that 64-bit integer types are
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supported by the compiler.
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-------------------------------------------------------------------------------
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*/
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#define BITS64
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/*
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-------------------------------------------------------------------------------
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Each of the following `typedef's defines the most convenient type that holds
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integers of at least as many bits as specified. For example, `uint8' should
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be the most convenient type that can hold unsigned integers of as many as
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8 bits. The `flag' type must be able to hold either a 0 or 1. For most
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implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
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to the same as `int'.
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-------------------------------------------------------------------------------
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*/
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typedef char flag;
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typedef unsigned char uint8;
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typedef signed char int8;
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typedef int uint16;
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typedef int int16;
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typedef unsigned int uint32;
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typedef signed int int32;
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#ifdef BITS64
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typedef unsigned long long int bits64;
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typedef signed long long int sbits64;
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#endif
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/*
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-------------------------------------------------------------------------------
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Each of the following `typedef's defines a type that holds integers
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of _exactly_ the number of bits specified. For instance, for most
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implementation of C, `bits16' and `sbits16' should be `typedef'ed to
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`unsigned short int' and `signed short int' (or `short int'), respectively.
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-------------------------------------------------------------------------------
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*/
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typedef unsigned char bits8;
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typedef signed char sbits8;
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typedef unsigned short int bits16;
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typedef signed short int sbits16;
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typedef unsigned int bits32;
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typedef signed int sbits32;
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#ifdef BITS64
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typedef unsigned long long int uint64;
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typedef signed long long int int64;
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#endif
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#ifdef BITS64
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/*
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-------------------------------------------------------------------------------
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The `LIT64' macro takes as its argument a textual integer literal and if
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necessary ``marks'' the literal as having a 64-bit integer type. For
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example, the Gnu C Compiler (`gcc') requires that 64-bit literals be
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appended with the letters `LL' standing for `long long', which is `gcc's
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name for the 64-bit integer type. Some compilers may allow `LIT64' to be
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defined as the identity macro: `#define LIT64( a ) a'.
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-------------------------------------------------------------------------------
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*/
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#define LIT64( a ) a##LL
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#endif
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/*
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-------------------------------------------------------------------------------
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The macro `INLINE' can be used before functions that should be inlined. If
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a compiler does not support explicit inlining, this macro should be defined
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to be `static'.
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-------------------------------------------------------------------------------
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*/
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#define INLINE extern __inline__
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/* For use as a GCC soft-float library we need some special function names. */
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#ifdef __LIBFLOAT__
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/* Some 32-bit ops can be mapped straight across by just changing the name. */
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#define float32_add __addsf3
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#define float32_sub __subsf3
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#define float32_mul __mulsf3
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#define float32_div __divsf3
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#define int32_to_float32 __floatsisf
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#define float32_to_int32_round_to_zero __fixsfsi
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#define float32_to_uint32_round_to_zero __fixunssfsi
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/* These ones go through the glue code. To avoid namespace pollution
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we rename the internal functions too. */
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#define float32_eq ___float32_eq
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#define float32_le ___float32_le
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#define float32_lt ___float32_lt
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/* All the 64-bit ops have to go through the glue, so we pull the same
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trick. */
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#define float64_add ___float64_add
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#define float64_sub ___float64_sub
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#define float64_mul ___float64_mul
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#define float64_div ___float64_div
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#define int32_to_float64 ___int32_to_float64
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#define float64_to_int32_round_to_zero ___float64_to_int32_round_to_zero
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#define float64_to_uint32_round_to_zero ___float64_to_uint32_round_to_zero
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#define float64_to_float32 ___float64_to_float32
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#define float32_to_float64 ___float32_to_float64
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#define float64_eq ___float64_eq
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#define float64_le ___float64_le
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#define float64_lt ___float64_lt
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#if 0
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#define float64_add __adddf3
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#define float64_sub __subdf3
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#define float64_mul __muldf3
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#define float64_div __divdf3
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#define int32_to_float64 __floatsidf
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#define float64_to_int32_round_to_zero __fixdfsi
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#define float64_to_uint32_round_to_zero __fixunsdfsi
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#define float64_to_float32 __truncdfsf2
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#define float32_to_float64 __extendsfdf2
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#endif
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#endif
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