Use asm functions in fdlibm about julia HOT 5 CLOSED

I'm fairly sure we want to use all the libm64 functions in place of their corresponding fdlibm ones on x86-64. I also know we do NOT want to use the trig functions in libm387, but some of the others there might be useful.

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What's the problem with the libm387 trig functions? Is it accuracy, or is there a better way to do it on x86-64?

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On Jun 16, 2011, at 11:37 PM, JeffBezanson wrote:

I'm fairly sure we want to use all the libm64 functions in place of their corresponding fdlibm ones on x86-64. I also know we do NOT want to use the trig functions in libm387, but some of the others there might be useful.

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#14 (comment)

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Accuracy. Intel has only designed them to support an argument range of +-2^63. They are also no faster than a good all-software implementation on a modern cpu.

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OK, we know we want the libm64 functions, especially sqrt if nothing else. sqrt is important.

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Now an openlibm issue.

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