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// unprecise_invSqrt - the infamous inverse square root approximation
JavaX fragment (include)
1 | static float unprecise_invSqrt(float x) {
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2 | float xhalf = 0.5f * x;
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3 | int i = Float.floatToIntBits(x);
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4 | i = 0x5f3759df - (i >> 1);
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5 | x = Float.intBitsToFloat(i);
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6 | x *= (1.5f - xhalf * x * x);
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7 | ret x;
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8 | } |
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| ID |
Author/Program |
Comment |
Date |
| 1380 | stefan | From https://stackoverflow.com/questions/11513344/how-to-implement-the-fast-inverse-square-root-in-java | 2019-07-29 11:31:54 |
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| Snippet ID: |
#1024278 |
| Snippet name: |
unprecise_invSqrt - the infamous inverse square root approximation |
| Eternal ID of this version: |
#1024278/1 |
| Text MD5: |
9f21f44439309378799c64c01a193cbb |
| Author: |
stefan |
| Category: |
javax / maths |
| Type: |
JavaX fragment (include) |
| Public (visible to everyone): |
Yes |
| Archived (hidden from active list): |
No |
| Created/modified: |
2019-07-29 11:31:37 |
| Source code size: |
211 bytes / 8 lines |
| Pitched / IR pitched: |
No / No |
| Views / Downloads: |
286 / 324 |
| Referenced in: |
[show references] |