mirror of
https://gitee.com/anod/open_agb_firm.git
synced 2025-05-06 22:04:10 +08:00
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
#pragma once
|
|
|
|
/*
|
|
* This file is part of open_agb_firm
|
|
* Copyright (C) 2021 derrek, profi200
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "types.h"
|
|
|
|
#define min(a,b) ((size_t) (a) <= (size_t) (b) ? (size_t) (a) : (size_t) (b))
|
|
|
|
#define arrayEntries(array) sizeof(array)/sizeof(*array)
|
|
|
|
|
|
|
|
/**
|
|
* @brief Waits at least the specified amount of CPU cycles.
|
|
*
|
|
* @param[in] cycles The cycles to wait.
|
|
*/
|
|
NAKED void wait_cycles(u32 cycles);
|
|
|
|
/**
|
|
* @brief Safer strcpy with checks.
|
|
* The dst string always gets terminated except when num is 0.
|
|
* If the src string is too long nothing is copied and dst will be terminated.
|
|
* This function is not safe against race conditions!
|
|
*
|
|
* @param dst The destination pointer.
|
|
* @param[in] src The source pointer.
|
|
* @param[in] num Maximum number of chars to copy including null terminator.
|
|
*
|
|
* @return The length of the copied string in bytes including null terminator.
|
|
*/
|
|
size_t safeStrcpy(char *const dst, const char *const src, size_t num);
|
|
|
|
/**
|
|
* @brief Basic string to float conversion. Limited to 6 decimal places.
|
|
* Doesn't support exponents.
|
|
*
|
|
* @param[in] str The string.
|
|
*
|
|
* @return The floatingpoint number represented by str.
|
|
*/
|
|
float str2float(const char *str);
|
|
|
|
// case insensitive string compare function
|
|
int strnicmp(const char *str1, const char *str2, u32 len);
|
|
|
|
// custom safe strncpy, string is always 0-terminated for buflen > 0
|
|
void strncpy_s(char *dest, const char *src, u32 nchars, const u32 buflen);
|
|
|
|
void memcpy_s(void *dstBuf, size_t dstBufSize, size_t dstBufOffset,
|
|
void *srcBuf, size_t srcBufSize, size_t srcBufOffset, bool reverse);
|
|
|
|
u32 getleu32(const void* ptr);
|
|
|
|
u32 swap32(u32 val);
|
|
|
|
static inline u32 intLog2(u32 val)
|
|
{
|
|
// The result is undefined if __builtin_clzl() is called with 0.
|
|
return (val ? 31u - __builtin_clzl(val) : val);
|
|
}
|
|
|
|
// Round up to the next power of 2.
|
|
static inline u32 nextPow2(u32 val)
|
|
{
|
|
// Portable variant:
|
|
// https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
|
|
/*val--;
|
|
val |= val>>1;
|
|
val |= val>>2;
|
|
val |= val>>4;
|
|
val |= val>>8;
|
|
val |= val>>16;
|
|
val++;
|
|
|
|
return val;*/
|
|
|
|
// Warning: Allowed range is 2 - 2147483648.
|
|
// Everything else is undefined behavior.
|
|
return 1u<<(32u - __builtin_clzl(val - 1));
|
|
}
|