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Add a workaround for possible rounding errors in calculations of

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sintable and radarang. sintable[512] was different in a 32-bit build.

From-SVN: r8796
This commit is contained in:
NY00123 2020-04-04 19:41:57 +00:00 committed by Christoph Oelckers
parent b54a6e0565
commit 3610609659
1 changed files with 2 additions and 2 deletions
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4
source/build/src/engine.cpp
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@ -1667,14 +1667,14 @@ static int32_t engineLoadTables(void)
reciptable[i] = divscale30(2048, i+2048);
for (i=0; i<=512; i++)
sintable[i] = (int16_t)(16384.f * sinf((float)i * BANG2RAD));
sintable[i] = (int16_t)(16384.f * sinf((float)i * BANG2RAD) + 0.0001f);
for (i=513; i<1024; i++)
sintable[i] = sintable[1024-i];
for (i=1024; i<2048; i++)
sintable[i] = -sintable[i-1024];
for (i=0; i<640; i++)
radarang[i] = (int16_t)(atanf(((float)(640-i)-0.5f) * (1.f/160.f)) * (-64.f * (1.f/BANG2RAD)));
radarang[i] = (int16_t)(atanf(((float)(640-i)-0.5f) * (1.f/160.f)) * (-64.f * (1.f/BANG2RAD)) + 0.0001f);
for (i=0; i<640; i++)
radarang[1279-i] = -radarang[i];