fpc(3) Library Functions Manual fpc(3)
Name
fpc, get_fpc_csr, set_fpc_csr, swapRM, swapINX - floating-point control registers
Syntax
#include <mips/fpu.h>
int get_fpc_csr()
int set_fpc_csr(csr)
int csr;
int get_fpc_irr()
int swapRM(x)
int x;
int swapINX(x)
int x;
Description
These functions are to get and set the floating-point control registers of RISC floating-point units. All of these functions take and
return their values as 32 bit integers.
The file <mips/fpu.h> contains unions for each of the control registers. Each union contains a structure that breaks out the bit fields
into the logical parts for each control register. This file also contains constants for fields of the control registers.
RISC floating-point implementations have a control and status register and an implementation revision register. The control and status
register is returned by The routine sets the control and status register and returns the old value. The implementation revision register
is read-only and is returned by the routine
The function sets only the rounding mode and returns the old rounding mode. The function sets only the sticky inexact bit and returns the
old one. The bits in the arguments and return values to and are right justified.
RISC fpc(3)
