pokefirered/src/math_util.c

#include "global.h"

s16 sub_80D8AA0(s16 x, s16 y)
{
    s32 result;

    result = x;
    result *= y;
    result /= 256;
    return result;
}

s16 sub_80D8ABC(u8 s, s16 x, s16 y)
{
    s32 result;

    result = x;
    result *= y;
    result /= (1 << s);
    return result;
}

s32 sub_80D8AE0(s32 x, s32 y)
{
    s64 result;

    result = x;
    result *= y;
    result /= 256;
    return result;
}

s16 sub_80D8B1C(s16 x, s16 y)
{
    if (y == 0)
    {
        return 0;
    }
    return (x << 8) / y;
}

s16 sub_80D8B40(u8 s, s16 x, s16 y)
{
    if (y == 0)
    {
        return 0;
    }
    return (x << s) / y;
}

s32 sub_80D8B68(s32 x, s32 y)
{
    s64 _x;

    if (y == 0)
    {
        return 0;
    }
    _x = x;
    _x *= 256;
    return _x / y;
}

s16 sub_80D8B90(s16 y)
{
    s32 x;

    x = 0x10000;
    return x / y;
}

s16 sub_80D8BA8(u8 s, s16 y)
{
    s32 x;

    x = 0x100 << s;
    return x / y;
}

s32 sub_80D8BC8(s32 y)
{
    s64 x;

    x = 0x10000;
    return x / y;
}