68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
#include "pgxp_value.h"
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#include "limits.h"
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void SetValue(PGXP_value *pV, u32 psxV)
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{
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psx_value psx;
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psx.d = psxV;
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pV->x = psx.sw.l;
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pV->y = psx.sw.h;
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pV->z = 0.f;
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pV->flags = VALID_01;
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pV->value = psx.d;
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}
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void MakeValid(PGXP_value *pV, u32 psxV)
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{
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psx_value psx;
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psx.d = psxV;
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if (VALID_01 != (pV->flags & VALID_01))
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{
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pV->x = psx.sw.l;
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pV->y = psx.sw.h;
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pV->z = 0.f;
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pV->flags = VALID_01;
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pV->value = psx.d;
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}
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}
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void Validate(PGXP_value *pV, u32 psxV)
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{
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// assume pV is not NULL
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pV->flags &= (pV->value == psxV) ? ALL : INV_VALID_ALL;
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}
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void MaskValidate(PGXP_value *pV, u32 psxV, u32 mask, u32 validMask)
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{
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// assume pV is not NULL
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pV->flags &= ((pV->value & mask) == (psxV & mask)) ? ALL : (ALL ^ (validMask));
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}
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u32 ValueToTolerance(PGXP_value *pV, u32 psxV, float tolerance)
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{
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psx_value psx;
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psx.d = psxV;
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u32 retFlags = VALID_ALL;
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if (fabs(pV->x - psx.sw.l) >= tolerance)
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retFlags = retFlags & (VALID_1 | VALID_2 | VALID_3);
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if (fabs(pV->y - psx.sw.h) >= tolerance)
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retFlags = retFlags & (VALID_0 | VALID_2 | VALID_3);
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return retFlags;
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}
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/// float logical arithmetic ///
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double f16Sign(double in) { u32 s = in * (double)((u32)1 << 16); return ((double)*((s32*)&s)) / (double)((s32)1 << 16); }
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double f16Unsign(double in) { return (in >= 0) ? in : ((double)in + (double)USHRT_MAX + 1); }
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double fu16Trunc(double in) { u32 u = in * (double)((u32)1 << 16); return (double)u / (double)((u32)1 << 16); }
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double f16Overflow(double in)
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{
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double out = 0;
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s64 v = ((s64)in) >> 16;
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out = v;
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return out;
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} |