| … | … | ||
|---|---|---|---|
| 186 | int32_t d = b - a; | 186 | int32_t d = b - a; |
| 187 | d &= d >> 31; | 187 | d &= d >> 31; |
| 188 | return b - d; | 188 | return b - d; |
| 189 | } | 189 | } |
| 190 | 190 | ||
| 191 | // this is much faster than crossfires original algorithm | 191 | // this is much faster than crossfire's original algorithm |
| 192 | // on modern cpus | 192 | // on modern cpus |
| 193 | inline int | 193 | inline int |
| 194 | isqrt (int n) | 194 | isqrt (int n) |
| 195 | { | 195 | { |
| 196 | return (int)sqrtf ((float)n); | 196 | return (int)sqrtf ((float)n); |
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