comparison: ucx/ucx/ucx.h
ucx/ucx/ucx.h
- changeset 505
- 481802342fdf
- parent 335
- c1bc13faadaa
equal
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inserted
replaced
| 504:bf3695fee719 | 505:481802342fdf |
|---|---|
| 35 | 35 |
| 36 #ifndef UCX_H | 36 #ifndef UCX_H |
| 37 #define UCX_H | 37 #define UCX_H |
| 38 | 38 |
| 39 /** Major UCX version as integer constant. */ | 39 /** Major UCX version as integer constant. */ |
| 40 #define UCX_VERSION_MAJOR 1 | 40 #define UCX_VERSION_MAJOR 2 |
| 41 | 41 |
| 42 /** Minor UCX version as integer constant. */ | 42 /** Minor UCX version as integer constant. */ |
| 43 #define UCX_VERSION_MINOR 0 | 43 #define UCX_VERSION_MINOR 0 |
| 44 | 44 |
| 45 /** Version constant which ensures to increase monotonically. */ | 45 /** Version constant which ensures to increase monotonically. */ |
| 129 * destination, the length of one element, the element count and a pointer to | 129 * destination, the length of one element, the element count and a pointer to |
| 130 * the source. | 130 * the source. |
| 131 */ | 131 */ |
| 132 typedef size_t(*read_func)(void*, size_t, size_t, void*); | 132 typedef size_t(*read_func)(void*, size_t, size_t, void*); |
| 133 | 133 |
| 134 | |
| 135 | |
| 136 #if __GNUC__ >= 5 || defined(__clang__) | |
| 137 #define UCX_MUL_BUILTIN | |
| 138 | |
| 139 #if __WORDSIZE == 32 | |
| 140 /** | |
| 141 * Alias for <code>__builtin_umul_overflow</code>. | |
| 142 * | |
| 143 * Performs a multiplication of size_t values and checks for overflow. | |
| 144 * | |
| 145 * @param a first operand | |
| 146 * @param b second operand | |
| 147 * @param result a pointer to a size_t, where the result should | |
| 148 * be stored | |
| 149 * @return zero, if no overflow occurred and the result is correct, non-zero | |
| 150 * otherwise | |
| 151 */ | |
| 152 #define ucx_szmul(a, b, result) __builtin_umul_overflow(a, b, result) | |
| 153 #else /* __WORDSIZE != 32 */ | |
| 154 /** | |
| 155 * Alias for <code>__builtin_umull_overflow</code>. | |
| 156 * | |
| 157 * Performs a multiplication of size_t values and checks for overflow. | |
| 158 * | |
| 159 * @param a first operand | |
| 160 * @param b second operand | |
| 161 * @param result a pointer to a size_t, where the result should | |
| 162 * be stored | |
| 163 * @return zero, if no overflow occurred and the result is correct, non-zero | |
| 164 * otherwise | |
| 165 */ | |
| 166 #define ucx_szmul(a, b, result) __builtin_umull_overflow(a, b, result) | |
| 167 #endif /* __WORDSIZE */ | |
| 168 | |
| 169 #else /* no GNUC or clang bultin */ | |
| 170 | |
| 171 /** | |
| 172 * Performs a multiplication of size_t values and checks for overflow. | |
| 173 * | |
| 174 * This is a custom implementation in case there is no compiler builtin | |
| 175 * available. | |
| 176 * | |
| 177 * @param a first operand | |
| 178 * @param b second operand | |
| 179 * @param result a pointer to a size_t, where the result should | |
| 180 * be stored | |
| 181 * @return zero, if no overflow occurred and the result is correct, non-zero | |
| 182 * otherwise | |
| 183 */ | |
| 184 #define ucx_szmul(a, b, result) ucx_szmul_impl(a, b, result) | |
| 185 | |
| 186 int ucx_szmul_impl(size_t a, size_t b, size_t *result); | |
| 187 | |
| 188 #endif | |
| 189 | |
| 134 #ifdef __cplusplus | 190 #ifdef __cplusplus |
| 135 } | 191 } |
| 136 #endif | 192 #endif |
| 137 | 193 |
| 138 #endif /* UCX_H */ | 194 #endif /* UCX_H */ |
