Blame benchtests/truncf-inputs

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## args: float
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## ret: float
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## includes: math.h
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0.0f
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-0.0f
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0.001f
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-0.001f
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0.5f
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-0.5f
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0.999f
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-0.999f
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1.0f
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-1.0f
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1.001f
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-1.001f
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123.5f
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-123.5f
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12345.1f
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-1000000.5f
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1e15f
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-1e30f