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Design Goals/Requirements:
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Good Performance on most processors
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High performance sometimes
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exact reproducibility sometimes
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access to IEEE floating point features
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We propose three modes of floating point execution
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strictfp: Reproducible results as in current default
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new default: Exploit natural hardware (extended exponent in Intel and fused multiply add)
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associatefp: Allow conventional compiler optimizations
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with new Intel algorithm, strictfp will be a little more than 2 times slower than default; associatefp gains will be algorithm dependent (regular problems will have greatest gain)
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