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add some macros to fx.h

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Made
2020-05-11 03:02:15 +02:00
parent 435f3ce09e
commit 95a1f4a566
1 changed files with 7 additions and 3 deletions
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10
arm9/lib/include/fx.h
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@@ -46,10 +46,14 @@ typedef s64 fx64c;
#define FX64C_INT_ABS(x) FX_INT_ABS(FX64C, x)
#define FX64C_FRAC(x) FX_FRAC(FX64C, x)
#define FX32_MUL(a, b) ((fx32)(((fx64)a * b) >> FX32_INT_SHIFT))
#define FX32_MUL_ADD_MUL(a, b, c, d) ((fx32)(((fx64)a * b + (fx64)c * d) >> FX32_INT_SHIFT))
//TODO: clean up these macros
#define FX32_MUL_NO_ROUND(a, b) ((fx32)(((fx64)(a) * (b)) >> FX32_INT_SHIFT))
#define FX32_MUL(a, b) ((fx32)((((fx64)(a) * (b) + (1 << (FX32_INT_SHIFT - 1))) >> FX32_INT_SHIFT)))
#define FX32_MUL_ADD_MUL(a, b, c, d) ((fx32)(((fx64)(a) * (b) + (fx64)c * d) >> FX32_INT_SHIFT))
//the extra term here is for rounding
#define FX32_MUL_SUB_MUL(a, b, c, d) ((fx32)(((fx64)a * b - (fx64)c * d + (1 << (FX32_INT_SHIFT - 1))) >> FX32_INT_SHIFT))
#define FX32_MUL_SUB_MUL(a, b, c, d) ((fx32)(((fx64)(a) * (b) - (fx64)c * d + (1 << (FX32_INT_SHIFT - 1))) >> FX32_INT_SHIFT))
#define FX_MUL_FX32_FX64C(a, b) ((fx32)((((a) * (b) + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT)))
struct Vecx32
{