System real conversion functions are conversion functions for real numbers.

Syntax:

$realtobits(real_value);
$bitstoreal(bit_value);
$rtoi(real_value);
$itor(integer_value);

Description:

$realtobits converts a real number to a 64-bit representation, so that a real number can be passed through the port of a module.

$bitstoreal converts the bit value to a real number.

$rtoi converts a real number to an integer. It truncates the real number to form the integer.

$itor converts an integer to a real value.

Example:

reg [63:0] A;
real B;
B = $bitstoreal(A);
integer C = 14;
B = $itor(C);       // B = 14.0

See also:

Module, Number