| FPGETMASK(3) | Library Functions Manual | FPGETMASK(3) | 
fpgetmask, fpgetprec,
  fpgetround, fpgetsticky,
  fpsetmask, fpsetprec,
  fpsetround, fpsetsticky
  —
#include <ieeefp.h>
fp_except_t
  
  fpgetmask(void);
fp_prec_t
  
  fpgetprec(void);
fp_rnd_t
  
  fpgetround(void);
fp_except_t
  
  fpgetsticky(void);
fp_except_t
  
  fpsetmask(fp_except_t
    mask);
fp_prec_t
  
  fpsetprec(fp_prec_t
    prec);
fp_rnd_t
  
  fpsetround(fp_rnd_t
    rnd_dir);
fp_except_t
  
  fpsetsticky(fp_except_t
    sticky);
| FP_RZ | rounding towards zero | 
| FP_RM | rounding down to (Minus infinity) | 
| FP_RN | rounding to nearest | 
| FP_RP | rounding down to (Plus infinity) | 
FP_RN.
An fp_except_t value is a bitmask specifying an exception type and containing any of the values listed below.
| FP_X_INV | Invalid Operation | 
| FP_X_DZ | Division by zero | 
| FP_X_OFL | Overflow | 
| FP_X_UFL | Underflow | 
| FP_X_IMP | Imprecision (inexact) | 
| FP_X_IOV | Integer Overflow | 
An fp_prec_t specifies the precision of the floating point operations listed below.
| FP_PS | 24
      bit (single-precision) | 
| FP_PRS | reserved | 
| FP_PD | 53
      bit (double-precision) | 
| FP_PE | 64
      bit (extended-precision) | 
The fpsetmask() function will set the
    current exception mask, i.e., it will cause future operations with the
    specified result status to raise the SIGFPE
    exception. The fpgetmask() function will return the
    current exception mask.
The fpgetprec() function will return the
    current floating point precision. The fpsetprec()
    function will set the floating point precision and will return the previous
    precision.
The fpsetround() function will cause
    future operations to use the specified dynamic rounding mode. The
    fpgetround() function will return the current
    rounding mode.
A “sticky” status word may be maintained in which a
    bit is set every time an exceptional floating point condition is
    encountered, whether or not a SIGFPE is generated.
    The fpsetsticky() function will set or clear the
    specified exception history bits. The fpgetsticky()
    function will return the exception history bits.
fpgetround() and
  fpsetround() functions return the (previous) rounding
  mode. The fpgetmask(),
  fpsetmask(), fpgetsticky(),
  and fpsetsticky() functions return the (previous)
  exception mask and exception history bits.
| March 26, 2011 | NetBSD 9.4 |