verilog 单精度转双精度

在Verilog中，可以使用$bitstoreal函数将单精度浮点数转换为双精度浮点数。该函数将一个32位的二进制数作为输入，并返回一个64位的双精度浮点数。例如，如果要将单精度浮点数0.1转换为双精度浮点数，可以使用以下代码：

reg \[31:0\] single_precision;
real double_precision;

single_precision = 32'b00111101110011001100110011001101;
double_precision = $bitstoreal(single_precision);

$display("Double precision: %f", double_precision);

这将输出双精度浮点数0.10000000149011612。请注意，由于单精度浮点数的精度限制，转换后的双精度浮点数可能会有一些舍入误差。
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