43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
/* Copyright 2023 (C) Peter McGoron
|
|
* This file is a part of Upsilon, a free and open source software project.
|
|
* For license terms, refer to the files in `doc/copying` in the Upsilon
|
|
* source distribution.
|
|
*/
|
|
#pragma once
|
|
#include <cstdarg>
|
|
#include <cstdlib>
|
|
#include <cstdio>
|
|
|
|
static inline void _assert(const char *file, int line, const char *exp, bool ev, const char *fmt, ...) {
|
|
if (!ev) {
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
fprintf(stderr, "%s:%d: assertion failed: %s\n", file, line, exp);
|
|
vfprintf(stderr, fmt, va);
|
|
fprintf(stderr, "\n");
|
|
va_end(va);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
#define STRINGIFY(s) #s
|
|
/* ,##__VA_ARGS__ is a GNU C extension */
|
|
#define my_assert(e, fmt, ...) _assert(__FILE__, __LINE__, STRINGIFY(e), (e), fmt ,##__VA_ARGS__)
|
|
|
|
template<typename V>
|
|
static inline V sign_extend(V x, unsigned len) {
|
|
/* if high bit is 1 */
|
|
if (x >> (len - 1) & 1) {
|
|
V mask = (1 << len) - 1;
|
|
return ~mask | x;
|
|
} else {
|
|
return x;
|
|
}
|
|
}
|
|
|
|
#define MASK(x,v) ((x) & ((1 << (v)) - 1))
|
|
template<typename V>
|
|
static inline V mask_extend(V x, unsigned len) {
|
|
return sign_extend<V>(MASK(x,len), len);
|
|
}
|