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LIBM_SINGLE(3F)						       LIBM_SINGLE(3F)

NAME
       libm_single - FORTRAN access to single-precision libm functions

SYNOPSIS
       Example for non-intrinsics:

       REAL c, s, x, y, z
	...
       z = r_acosh( x )
       i = ir_finite( x )
       z = r_hypot( x, y )
       z = r_infinity()
       CALL r_sincos( x, s, c )

       Note:  The  REAL	 functions  used are not in a REAL statement.  Type is
       determined by the default typing rules for the letter "r".

DESCRIPTION
       These subprograms provide access to single-precision libm functions and
       subroutines.

       asind(x), sind(x), and so on involve degrees, rather than radians.

INTRINSICS
       The  following FORTRAN intrinsic functions return single-precision val‐
       ues if their arguments are single-precision.

       You need not put them in a type statement. If the  function  needed  is
       available  as  an intrinsic function, it is simpler to use an intrinsic
       than a non-intrinsic function.

       The variables x and y are of type real.

       sqrt(x)	  asin(x)      acosd(x)*
       log(x)	  acos(x)      asind(x)*
       log10(x)	  atan(x)      acosd(x)*
       exp(x)	  atan2(x,y)   atand(x)*
       x**y	  sinh(x)      atan2d(x,y)*
       sin(x)	  cosh(x)*     aint(x)
       cos(x)	  tanh(x)*     anint(x)
       tan(x)	  sind(x)*     nint(x)

       * = nonstandard: it is an extension that this is intrinsic

NON-INTRINSIC FUNCTIONS AND SUBROUTINES
       In general, these functions  do	not  correspond	 to  standard  FORTRAN
       generic	intrinsic functions, so their data types are determined by the
       usual FORTRAN data typing rules.

       The variables c, l, p, s, u, x, and y are of type real.

       r_acos( x )		  real	     function
       r_acosd( x )		  real	     function
       r_acosh( x )		  real	     function
       r_acosp( x )		  real	     function
       r_acospi( x )		  real	     function

       r_atan( x )		  real	     function
       r_atand( x )		  real	     function
       r_atanh( x )		  real	     function
       r_atanp( x )		  real	     function
       r_atanpi( x )		  real	     function

       r_asin( x )		  real	     function
       r_asind( x )		  real	     function
       r_asinh( x )		  real	     function
       r_asinp( x )		  real	     function
       r_asinpi( x )		  real	     function

       r_atan2(( y, x )		  real	     function
       r_atan2d( y, x )		  real	     function
       r_atan2pi( y, x )	  real	     function

       r_cbrt( x )		  real	     function
       r_ceil( x )		  real	     function
       r_copysign( x, y )	  real	     function

       r_cos( x )		  real	     function
       r_cosd( x )		  real	     function
       r_cosh( x )		  real	     function
       r_cosp( x )		  real	     function
       r_cospi( x )		  real	     function

       r_erf( x )		  real	     function
       r_erfc( x )		  real	     function

       r_expm1( x )		  real	     function
       r_floor( x )		  real	     function
       r_hypot( x, y )		  real	     function

       r_infinity( )		  real	     function

       r_j0( x )		  real	     function
       r_j1( x )		  real	     function
       r_jn( n, x )		  real	     function

       ir_finite( x )		  integer    function
       ir_fp_class( x )		  integer    function
       ir_ilogb( x )		  integer    function
       ir_irint( x )		  integer    function
       ir_isinf( x )		  integer    function
       ir_isnan( x )		  integer    function
       ir_isnormal( x )		  integer    function
       ir_issubnormal( x )	  integer    function
       ir_iszero( x )		  integer    function
       ir_signbit( x  )		  integer    function

       r_addran()		  real	     function
       r_addrans( x, p, l, u )	  n/a	     subroutine
       r_lcran()		  real	     function
       r_lcrans( x, p, l, u )	  n/a	     subroutine
       r_shufrans(x, p, l, u)	  n/a	     subroutine

       r_lgamma( x )		  real	     function
       r_logb( x )		  real	     function
       r_log1p( x )		  real	     function
       r_log2( x )		  real	     function

       r_max_normal()		  real	     function
       r_max_subnormal()	  real	     function
       r_min_normal()		  real	     function
       r_min_subnormal()	  real	     function
       r_nextafter( x, y )	  real	     function
       r_quiet_nan( n )		  real	     function
       r_remainder( x, y )	  real	     function
       r_rint( x )		  real	     function
       r_scalb( x, y )		  real	     function
       r_scalbn( x, n )		  real	     function
       r_signaling_nan( n )	  real	     function
       r_significand( x )	  real	     function

       r_sin( x )		  real	     function
       r_sind( x )		  real	     function
       r_sinh( x )		  real	     function
       r_sinp( x )		  real	     function
       r_sinpi( x )		  real	     function

       r_sincos( x, s, c )	  n/a	     subroutine
       r_sincosd( x, s, c )	  n/a	     subroutine
       r_sincosp( x, s, c )	  n/a	     subroutine
       r_sincospi( x, s, c )	  n/a	     subroutine

       r_tan( x )		  real	     function
       r_tand( x )		  real	     function
       r_tanh( x )		  real	     function
       r_tanp( x )		  real	     function
       r_tanpi( x )		  real	     function

       r_y0( x )		  real	     function
       r_y1( x )		  real	     function
       r_yn( n,x )		  real	     function

FILES
       libm.a

SEE ALSO
       intro(3M)
       FORTRAN 77 Reference Manual
       Numerical Computation Guide

				 07 July 1995		       LIBM_SINGLE(3F)
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