| 1 | //! Architecture-specific support for x86-32 and x86-64 with SSE2 |
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| 3 | pub fn sqrtf(mut x: f32) -> f32 { |
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| 4 | // SAFETY: `sqrtss` is part of `sse2`, which this module is gated behind. It has no memory |
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| 5 | // access or side effects. |
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| 6 | unsafe { |
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| 7 | core::arch::asm!( |
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| 8 | "sqrtss { x}, { x}" , |
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| 9 | x = inout(xmm_reg) x, |
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| 10 | options(nostack, nomem, pure), |
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| 11 | ) |
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| 12 | }; |
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| 13 | x |
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| 14 | } |
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| 15 | |
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| 16 | pub fn sqrt(mut x: f64) -> f64 { |
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| 17 | // SAFETY: `sqrtsd` is part of `sse2`, which this module is gated behind. It has no memory |
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| 18 | // access or side effects. |
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| 19 | unsafe { |
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| 20 | core::arch::asm!( |
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| 21 | "sqrtsd { x}, { x}" , |
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| 22 | x = inout(xmm_reg) x, |
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| 23 | options(nostack, nomem, pure), |
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| 24 | ) |
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| 25 | }; |
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| 26 | x |
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| 27 | } |
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| 28 | |
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