The Socrates Gameboy Advance Development EngineThe SGADE is a development library for the Nintendo Gameboy Advance. It's free for all uses and is distributed without guarantees. For more information visit the SGADE page.
The Socrates Gameboy Advance Development Engine
The SGADE is a development library for the Nintendo Gameboy
Advance. It's free for all uses and is distributed without guarantees.
For more information visit
the SGADE page.
#include "SoSystem.h"#include "SoDebug.h"Go to the source code of this file.
Defines | |
| #define | SO_FIXED_Q |
| Number of bits reserved for the fraction in fixed point numbers. | |
| #define | SO_FIXED_PI |
| PI a.k.a. 3.14 etc. in a fixed point format. | |
| #define | SO_MIN(x, y) |
| Returns the minimum of a pair of numbers. | |
| #define | SO_MAX(x, y) |
| Returns the maximum of a pair of numbers. | |
| #define | SO_ABS(x) |
| Returns the absolute value of a number. | |
| #define | SO_NUMBER_IS_EVEN(n) |
| Evaluates to true when a number is even, false otherwise. | |
| #define | SO_NUMBER_IS_UNEVEN(n) |
| Evaluates to false when a number is even, true otherwise. | |
| #define | SO_FIXED_FROM_WHOLE(n) |
| Converts a whole (integer) number to a fixedpoint number. | |
| #define | SO_FIXED_TO_WHOLE(n) |
| Converts a fixed point number to a whole number. Cuts of the fraction. | |
| #define | SO_FIXED_FROM_FLOAT(n) |
| Converts a whole number to a fixedpoint number. | |
| #define | SO_FIXED_TO_FLOAT(n) |
| Converts a fixed point number to a whole number. | |
| #define | SO_FIXED_TO_FRACTION(n) |
| Leaves only the fraction of a fixed point number. | |
| #define | SO_FIXED_MAKE_WHOLE(n) |
| Makes a fixed point number whole. | |
| #define | SO_FIXED_CEIL_WHOLE(n) |
| Returns the whole ceiling of the fixed point number. | |
| #define | SO_FIXED_TO_N_8_FORMAT(n) |
| Converts our fixed point format to a 24.8 format. | |
| #define | SO_FIXED_MULTIPLY_SMALL_SMALL(n, m) |
| NOTE: all of the SO_FIXED_MULTIPLY_* macros are very sensitive to input data. | |
| #define | SO_FIXED_MULTIPLY_BIG_SMALL(big, small) |
| Multiply macro to multiply a relatively small fixed point number by a relatively big one. | |
| #define | SO_FIXED_MULTIPLY(n, m) |
| Multiply macro to multiply two fixed point numbers. | |
| #define | SO_FIXED_DIVIDE_SMALL_BIG(n, m) |
| Divide macro to divide a small fixed number by a big fixed point number. | |
| #define | SO_FIXED_DIVIDE(n, m) |
| Divide macro to divide a fixed point number by another fixed point number. | |
| #define | SO_FIXED_ONE_OVER_FAST_INACCURATE(n) |
| One-over macro that uses a repricocal-table. | |
| #define | SO_FIXED_ONE_OVER_SLOW_ACCURATE(n) |
| Macro to calculate one-over-N the slow and accurate way. | |
| #define | SO_SINE(n) |
| Returns the fixed point sine of an angle. A full circle is 256 degrees. | |
| #define | SO_COSINE(n) |
| Returns the fixed point cosine of an angle. | |
Functions | |
| sofixedpoint | SoMathFixedMultiply (sofixedpoint a_A, sofixedpoint a_B) |
| Fixed-point multiplication function. | |
| sofixedpoint | SoMathFixedMultiplyByFraction (sofixedpoint a_A, sofixedpoint a_B) |
| Fixed-point multiplication by fraction function. | |
| sofixedpoint | SoMathFixedSqrt (sofixedpoint a_FixedValue) |
| Squareroot function. | |
| void | SoMathRandSeed (u32 a_Seed) |
| Seeds the random number generator. | |
| u32 | SoMathRand (void) |
| Returns a pseudo random number. | |
| s32 | SoMathDivideAndModulus (s32 a_Numerator, s32 a_Denominator, s32 *a_Remainder) |
| Fast divide and modulus function. | |
| s32 | SoMathModulus (s32 a_Numerator, s32 a_Denominator) |
| Fast modulus function. | |
| s32 | SoMathDivide (s32 a_Numerator, s32 a_Denominator) |
| Fast divide function. | |