LIBM_QUADRUPLE(3F)
NAME
libm_quadruple - FORTRAN access to quadruple-precision functions (SPARC only)
SYNOPSIS
Example for non-intrinsics:
REAL∗16 c, q_acosh, q_hypot, q_infinity, s, x, y, z
z = q_acosh( x )
i = iq_finite( x )
z = q_hypot( x, y )
z = q_infinity()
CALL q_sincos( x, s, c )
Quad functions used are in a REAL∗16 statement.
DESCRIPTION
These functions provide access to quadruple-precision libm functions. asind(x), sind(x), and so on involve degrees, rather than radians.
INTRINSICS
The following FORTRAN intrinsic functions return quadruple precision values if their arguments are quadruple 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 c, l, p, s, u, x, and y are REAL∗16.
| 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
These functions do not correspond to standard FORTRAN generic intrinsic functions, so their data types are determined by the usual FORTRAN data typing rules.
If you use one of these quad functions, put it into a REAL∗16 statement, or type it with IMPLICIT. For meanings of routines and arguments, do a man command on the routine name without the q_; the output is a C man page for the double precision function, but the meanings are the same.
Variables c, l, p, s, u, x, and y are REAL∗16.
| q_copysign( x, y ) | real∗16 | function | ||
| q_fabs( x ) | real∗16 | function | ||
| q_fmod( x ) | real∗16 | function | ||
| q_infinity( ) | real∗16 | function | ||
| iq_finite( x ) | integer | function | ||
| iq_fp_class( x ) | integer | function | ||
| iq_ilogb( x ) | integer | function | ||
| iq_isinf( x ) | integer | function | ||
| iq_isnan( x ) | integer | function | ||
| iq_isnormal( x ) | integer | function | ||
| iq_issubnormal( x ) | integer | function | ||
| iq_iszero( x ) | integer | function | ||
| iq_signbit( x ) | integer | function | ||
| q_max_normal() | real∗16 | function | ||
| q_max_subnormal() | real∗16 | function | ||
| q_min_normal() | real∗16 | function | ||
| q_min_subnormal() | real∗16 | function | ||
| q_nextafter( x, y ) | real∗16 | function | ||
| q_quiet_nan( n ) | real∗16 | function | ||
| q_remainder( x, y ) | real∗16 | function | ||
| q_scalbn( x, n ) | real∗16 | function | ||
| q_signaling_nan( n ) | real∗16 | function | ||
If you need to use any other quadruple-precision libm function, you can call a C function that calls the libm function.
FILES
libm.a
SEE ALSO
intro(3M)
Numerical Computation Guide
FORTRAN 77 Reference Manual
SunOS WorkShop_5.0 — Last change: 07 July 1995