24 lines
410 B
Go
24 lines
410 B
Go
//go:build arm64 && !purego
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package asm
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// GetFPCR returns the value of FPCR register.
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func getFPCR() (value uint32)
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// SetFPCR writes the FPCR value.
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func setFPCR(value uint32)
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func setRoundingMode(mode uint8) {
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switch mode {
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// switch plus/minus infinity
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case 1:
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mode = 2
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case 2:
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mode = 1
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}
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fpcr := getFPCR()
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fpcr = (fpcr & (^uint32(0x0C00000))) | ((uint32(mode) & 3) << 22)
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setFPCR(fpcr)
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}
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