1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can 5 * be found in the LICENSE file. 6 * 7 */ 8 9 #ifndef SKC_ONCE_MACROS 10 #define SKC_ONCE_MACROS 11 12 // 13 // 14 // 15 16 #include "types.h" 17 18 // 19 // 20 // 21 22 #define SKC_RESTRICT __restrict 23 24 // 25 // 26 // 27 28 #define SKC_CONSTANT __constant 29 #define SKC_GLOBAL __global 30 31 // 32 // 33 // 34 35 #define SKC_CALLBACK __stdcall 36 37 // 38 // 39 // 40 41 #define SKC_TRUE 1 42 #define SKC_FALSE 0 43 44 // 45 // 46 // 47 48 #define SKC_EMPTY 49 #define SKC_COMMA , 50 51 // 52 // INDEX, SUFFIX, COMPONENT, PUNCTUATION, RGBA 53 // 54 55 #define SKC_EXPAND_1() \ 56 SKC_EXPAND_X(0,SKC_EMPTY,SKC_EMPTY,SKC_EMPTY,SKC_EMPTY) 57 58 #define SKC_EXPAND_2() \ 59 SKC_EXPAND_X(0, 0,.s0,SKC_COMMA,.even) \ 60 SKC_EXPAND_X(1, 1,.s1,SKC_EMPTY,.odd) 61 62 #define SKC_EXPAND_4() \ 63 SKC_EXPAND_X(0, 0,.s0,SKC_COMMA,.even.even) \ 64 SKC_EXPAND_X(1, 1,.s1,SKC_COMMA,.odd.even) \ 65 SKC_EXPAND_X(2, 2,.s2,SKC_COMMA,.even.odd) \ 66 SKC_EXPAND_X(3, 3,.s3,SKC_EMPTY,.odd.odd) 67 68 #define SKC_EXPAND_8() \ 69 SKC_EXPAND_X(0, 0,.s0,SKC_COMMA,SKC_EMPTY) \ 70 SKC_EXPAND_X(1, 1,.s1,SKC_COMMA,SKC_EMPTY) \ 71 SKC_EXPAND_X(2, 2,.s2,SKC_COMMA,SKC_EMPTY) \ 72 SKC_EXPAND_X(3, 3,.s3,SKC_COMMA,SKC_EMPTY) \ 73 SKC_EXPAND_X(4, 4,.s4,SKC_COMMA,SKC_EMPTY) \ 74 SKC_EXPAND_X(5, 5,.s5,SKC_COMMA,SKC_EMPTY) \ 75 SKC_EXPAND_X(6, 6,.s6,SKC_COMMA,SKC_EMPTY) \ 76 SKC_EXPAND_X(7, 7,.s7,SKC_EMPTY,SKC_EMPTY) 77 78 #define SKC_EXPAND_16() \ 79 SKC_EXPAND_X(0, 0,.s0,SKC_COMMA,SKC_EMPTY) \ 80 SKC_EXPAND_X(1, 1,.s1,SKC_COMMA,SKC_EMPTY) \ 81 SKC_EXPAND_X(2, 2,.s2,SKC_COMMA,SKC_EMPTY) \ 82 SKC_EXPAND_X(3, 3,.s3,SKC_COMMA,SKC_EMPTY) \ 83 SKC_EXPAND_X(4, 4,.s4,SKC_COMMA,SKC_EMPTY) \ 84 SKC_EXPAND_X(5, 5,.s5,SKC_COMMA,SKC_EMPTY) \ 85 SKC_EXPAND_X(6, 6,.s6,SKC_COMMA,SKC_EMPTY) \ 86 SKC_EXPAND_X(7, 7,.s7,SKC_COMMA,SKC_EMPTY) \ 87 SKC_EXPAND_X(8, 8,.s8,SKC_COMMA,SKC_EMPTY) \ 88 SKC_EXPAND_X(9, 9,.s9,SKC_COMMA,SKC_EMPTY) \ 89 SKC_EXPAND_X(10,A,.sA,SKC_COMMA,SKC_EMPTY) \ 90 SKC_EXPAND_X(11,B,.sB,SKC_COMMA,SKC_EMPTY) \ 91 SKC_EXPAND_X(12,C,.sC,SKC_COMMA,SKC_EMPTY) \ 92 SKC_EXPAND_X(13,D,.sD,SKC_COMMA,SKC_EMPTY) \ 93 SKC_EXPAND_X(14,E,.sE,SKC_COMMA,SKC_EMPTY) \ 94 SKC_EXPAND_X(15,F,.sF,SKC_EMPTY,SKC_EMPTY) 95 96 // 97 // 98 // 99 100 #define SKC_BITS_TO_MASK(n) (((skc_uint)1<<(n))-1) 101 #define SKC_BITS_TO_MASK_64(n) (((skc_ulong)1<<(n))-1) 102 103 #define SKC_BITS_TO_MASK_AT(n,b) (SKC_BITS_TO_MASK(n)<<(b)) 104 #define SKC_BITS_TO_MASK_AT_64(n,b) (SKC_BITS_TO_MASK_64(n)<<(b)) 105 106 // 107 // IF BFE IS SUPPORTED BY THE PLATFORM THEN IMPLEMENT DIFFERENTLY 108 // 109 110 #define SKC_BFE(x,n,i) (((x) & SKC_BITS_TO_MASK_AT(n,i)) >> (i)) 111 112 // 113 // IF BFI IS SUPPORTED BY THE PLATFORM THEN IMPLEMENT DIFFERENTLY 114 // 115 // Note this BFI assumes the destination bits were already set to zero 116 // 117 118 #define SKC_BFI(d,n,i,v) ((((v) & SKC_BITS_TO_MASK(n)) << (i)) | (d)) 119 120 // 121 // 122 // 123 124 #define SKC_STRINGIFY2(a) #a 125 #define SKC_STRINGIFY(a) SKC_STRINGIFY2(a) 126 127 // 128 // 129 // 130 131 #define SKC_EVAL(x) x 132 #define SKC_CONCAT(a,b) SKC_EVAL(a)##SKC_EVAL(b) 133 134 // 135 // 136 // 137 138 #define SKC_MAX_MACRO(a,b) (((a) > (b)) ? (a) : (b)) 139 #define SKC_MIN_MACRO(a,b) (((a) < (b)) ? (a) : (b)) 140 #define SKC_GTE_MACRO(a,b) ((a) >= (b)) 141 #define SKC_LT_MACRO(a,b) ((a) < (b)) 142 143 // 144 // 145 // 146 147 #define SKC_COUNT_OF(x) (sizeof(x) / sizeof(x)[0]) 148 #define SKC_OFFSET_OF(t,m) ((size_t)&(((t*)0)->m)) 149 #define SKC_MEMBER_SIZE(t,m) sizeof(((t*)0)->m) 150 151 152 // 153 // Returns rounded up next power-of-2 for non-zero -- via bit 154 // twiddling hacks, etc. 155 // 156 157 #define SKC_P2_OR_RS(n,x) ((x)|(x)>>n) 158 #define SKC_POW2_RU_U32(x) (1+SKC_P2_OR_RS(16,SKC_P2_OR_RS(8,SKC_P2_OR_RS(4,SKC_P2_OR_RS(2,SKC_P2_OR_RS(1,x-1)))))) 159 160 // 161 // Round up 162 // 163 164 #define SKC_ROUND_DOWN(v,q) (((v) / (q)) * (q)) 165 #define SKC_ROUND_UP(v,q) ((((v) + (q) - 1) / (q)) * (q)) 166 167 #define SKC_ROUND_DOWN_POW2(v,q) ((v) & ~((q) - 1)) 168 #define SKC_ROUND_UP_POW2(v,q) SKC_ROUND_DOWN_POW2((v) + (q) - 1,q) 169 170 // 171 // 172 // 173 174 #if !defined(__OPENCL_C_VERSION__) 175 176 #define SKC_STATIC_ASSERT(p) static_assert((p),#p) 177 178 #else 179 180 #define SKC_STATIC_ASSERT(p) 181 182 #endif 183 184 // 185 // Returns 1-based bit position of MSB 186 // 187 188 #define SKC_MSB_4(x,n) (((x>>(n-0))&1)+((x>>(n-1))&1)+((x>>(n-2))&1)+((x>>(n-3))&1)) 189 #define SKC_MSB_7654(x) SKC_MSB_4(x,31)+SKC_MSB_4(x,27)+SKC_MSB_4(x,23)+SKC_MSB_4(x,19) 190 #define SKC_MSB_3210(x) SKC_MSB_4(x,15)+SKC_MSB_4(x,11)+SKC_MSB_4(x, 7)+SKC_MSB_4(x, 3) 191 #define SKC_MSB_U32(x) ( SKC_MSB_7654(((skc_uint)x)) + SKC_MSB_3210(((skc_uint)x)) ) 192 193 // 194 // FIXME -- handle other compilers besides MSVC/x86 195 // 196 197 #define SKC_LZCNT_32(v) __lzcnt(v) 198 199 // 200 // 201 // 202 203 #endif 204 205
