npv/c_fixing.h

   1 #ifndef NPV_C_FIXING_H
   2 #define NPV_C_FIXING_H
   3 /*
   4  * code protected with a GNU affero GPLv3 license
   5  * copyright (C) 2020 Sylvain BERTRAND
   6  */
   7 #include <stdint.h>
   8 #include <limits.h>
   9 #include <stdatomic.h>
  10
  11 #define u8 uint8_t
  12 #define U8_MAX 0xff
  13 #define s8 int8_t
  14 #define u16 uint16_t
  15 #define U16_MAX 0xffff
  16 #define s16 int16_t
  17 #define u32 uint32_t
  18 #define u64 uint64_t
  19 #define U64_MAX 0xffffffffffffffff
  20 #define s64 int64_t
  21 #define S64_MIN 0x8000000000000000
  22 #define S64_MAX 0x7fffffffffffffff
  23 #define s64_abs labs
  24 #define s32 int32_t
  25 #define f32 float
  26 #define f64 double
  27
  28 #if UCHAR_WIDTH == 8
  29         #define atomic_u8 atomic_uchar
  30 #else
  31         #error "unable to find the right atomic for a 8 bits byte, be sure to have __STDC_WANT_IEC_60559_BFP_EXT__ defined"
  32 #endif
  33 #if SHRT_WIDTH == 16
  34         #define atomic_u16 atomic_ushort
  35 #else
  36         #error "unable to find the right atomic for an unsigned 16 bits word, be sure to have __STDC_WANT_IEC_60559_BFP_EXT__ defined"
  37 #endif
  38 #if UINT_WIDTH == 32
  39         #define atomic_u32 atomic_uint
  40 #elif ULONG_WIDTH == 32
  41         #define atomic_u32 atomic_ulong
  42 #else
  43         #error "unable to select the right atomic for an unsigned 32 bits word, be sure to have __STDC_WANT_IEC_60559_BFP_EXT__ defined"
  44 #endif
  45 #if LONG_WIDTH == 64
  46         #define atomic_s64 atomic_long
  47 #else
  48         #error "unable to select the right atomic for a 64 bits signed word, be sure to have __STDC_WANT_IEC_60559_BFP_EXT__ defined"
  49 #endif
  50
  51 #define loop for(;;)
  52 /*
  53  * we don't know how to handle enum from the C "standard" perspective. this
  54  * is based on empirical conclusions based on gcc.
  55  * this is for compiler constant, not compiler constant _variables_
  56  */
  57 #define constant_u32 enum
  58
  59 #define ARRAY_N(x) (sizeof(x) / sizeof((x)[0]))
  60 #endif