IntLog2WithError
Description
Compute floor(log2(value)).
Parameters
| Name | Direction | Description |
|---|---|---|
value |
in | Integer to inspect |
error |
out | Optional pointer set to true on failure and false on success |
Success
Returns Index of the highest set bit, or 0 on failure.
Failure
Returns 0 when value is zero. *error (if non-NULL) is set to true.
Usage example (Cross-references)
Usage examples (Cross-references)
- In
Access.h:173:
static inline u64 int_log2_no_error(const Int *value) {
return IntLog2WithError(value, NULL);
}- In
Access.h:200:
/// TAGS: Int, Access, Log2, Macro
///
#define IntLog2(...) INT_LOG2_SELECT(__VA_ARGS__, IntLog2WithError, int_log2_no_error)(__VA_ARGS__)
#endif // MISRA_STD_CONTAINER_INT_ACCESS_H
- In
Int.c:390:
}
u64 IntLog2WithError(const Int *value, bool *error) {
u64 out = 0;
bool ok = IntTryLog2(value, &out);
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