libfastm(3M)

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LIBFASTM(3M)                                                   LIBFASTM(3M)


NAME
     libfastm - fast transcendental library

SYNOPSIS
     #include <math.h>

DESCRIPTION
     libfastm.a contains various hand-coded routines tuned to the specific
     architecture of the system.  Currently, on MIPS 1 systems, libfastm.a
     contains only routines sqrt and fsqrt.  On MIPS 2 systems libfastm.a
     contains routines sqrt and fsqrt, which are identical to those in
     libm.a.  (Hardware square root instructions exist on MIPS 2 and later
     architectures.)

     On MIPS 4 systems, libfastm.a also contains the following routines:
     sin, cos, tan, atan2, exp, log, pow, sinf, cosf, tanf, expf, logf, and
     powf.

   Limitation
     On MIPS 4 systems, routines in libfastm.a must be run in round to
     nearest rounding mode to give correct results.  This is the default
     rounding mode.

     Routines in this library do not set global errno, and may not give
     correct results for NaNs and Infinities.

     Routines sin, cos, and tan give accurate results for arguments between
     +-2**22 radians.

     Routines sinf, cosf, and tanf give accurate results for arguments
     between +/-2**15 radians.  Precision may be lost near multiples of
     pi/2 for these three routines.

     Routines sin, cos, tan, and atan2 should be run with underflow and
     overflow floating point traps disabled (the default mode) to avoid
     trapping in these routines.