1 /* SPDX-License-Identifier: GPL-2.0 */
3 -------------------------------------------------------------------------------
4 The macro `BITS64' can be defined to indicate that 64-bit integer types are
5 supported by the compiler.
6 -------------------------------------------------------------------------------
11 -------------------------------------------------------------------------------
12 Each of the following `typedef's defines the most convenient type that holds
13 integers of at least as many bits as specified. For example, `uint8' should
14 be the most convenient type that can hold unsigned integers of as many as
15 8 bits. The `flag' type must be able to hold either a 0 or 1. For most
16 implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
18 -------------------------------------------------------------------------------
21 typedef unsigned char uint8;
22 typedef signed char int8;
25 typedef unsigned int uint32;
26 typedef signed int int32;
28 typedef unsigned long long int bits64;
29 typedef signed long long int sbits64;
33 -------------------------------------------------------------------------------
34 Each of the following `typedef's defines a type that holds integers
35 of _exactly_ the number of bits specified. For instance, for most
36 implementation of C, `bits16' and `sbits16' should be `typedef'ed to
37 `unsigned short int' and `signed short int' (or `short int'), respectively.
38 -------------------------------------------------------------------------------
40 typedef unsigned char bits8;
41 typedef signed char sbits8;
42 typedef unsigned short int bits16;
43 typedef signed short int sbits16;
44 typedef unsigned int bits32;
45 typedef signed int sbits32;
47 typedef unsigned long long int uint64;
48 typedef signed long long int int64;
53 -------------------------------------------------------------------------------
54 The `LIT64' macro takes as its argument a textual integer literal and if
55 necessary ``marks'' the literal as having a 64-bit integer type. For
56 example, the Gnu C Compiler (`gcc') requires that 64-bit literals be
57 appended with the letters `LL' standing for `long long', which is `gcc's
58 name for the 64-bit integer type. Some compilers may allow `LIT64' to be
59 defined as the identity macro: `#define LIT64( a ) a'.
60 -------------------------------------------------------------------------------
62 #define LIT64( a ) a##LL
66 -------------------------------------------------------------------------------
67 The macro `INLINE' can be used before functions that should be inlined. If
68 a compiler does not support explicit inlining, this macro should be defined
70 -------------------------------------------------------------------------------
72 #define INLINE static inline
75 /* For use as a GCC soft-float library we need some special function names. */
79 /* Some 32-bit ops can be mapped straight across by just changing the name. */
80 #define float32_add __addsf3
81 #define float32_sub __subsf3
82 #define float32_mul __mulsf3
83 #define float32_div __divsf3
84 #define int32_to_float32 __floatsisf
85 #define float32_to_int32_round_to_zero __fixsfsi
86 #define float32_to_uint32_round_to_zero __fixunssfsi
88 /* These ones go through the glue code. To avoid namespace pollution
89 we rename the internal functions too. */
90 #define float32_eq ___float32_eq
91 #define float32_le ___float32_le
92 #define float32_lt ___float32_lt
94 /* All the 64-bit ops have to go through the glue, so we pull the same
96 #define float64_add ___float64_add
97 #define float64_sub ___float64_sub
98 #define float64_mul ___float64_mul
99 #define float64_div ___float64_div
100 #define int32_to_float64 ___int32_to_float64
101 #define float64_to_int32_round_to_zero ___float64_to_int32_round_to_zero
102 #define float64_to_uint32_round_to_zero ___float64_to_uint32_round_to_zero
103 #define float64_to_float32 ___float64_to_float32
104 #define float32_to_float64 ___float32_to_float64
105 #define float64_eq ___float64_eq
106 #define float64_le ___float64_le
107 #define float64_lt ___float64_lt
110 #define float64_add __adddf3
111 #define float64_sub __subdf3
112 #define float64_mul __muldf3
113 #define float64_div __divdf3
114 #define int32_to_float64 __floatsidf
115 #define float64_to_int32_round_to_zero __fixdfsi
116 #define float64_to_uint32_round_to_zero __fixunsdfsi
117 #define float64_to_float32 __truncdfsf2
118 #define float32_to_float64 __extendsfdf2