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 and libsunmath functions and subroutines.
asind(x), sind(x), and so on involve degrees, rather than radians.
INTRINSICS
The following FORTRAN intrinsic functions return single precision values 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)*
|
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log(x)
|
acos(x)
|
asind(x)*
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log10(x)
|
atan(x)
|
acosd(x)*
|
|
exp(x)
|
atan2(x,y)
|
atand(x)*
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x**y
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sinh(x)
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atan2d(x,y)*
|
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sin(x)
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cosh(x)*
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aint(x)
|
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cos(x)
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tanh(x)*
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anint(x)
|
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tan(x)
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sind(x)*
|
nint(x)
|
|
* = nonstandard: it is an extension that this is intrinsic
NON-INTRINSIC FUNCTIONS AND SUBROUTINES
Note: With the exception of the random number functions (r_addran(), r_addrans(), r_lcran(), r_lcrans(), and r_shufrans()), the functions listed below are deprecated and may be removed in a future release. Fortran programs may invoke the corresponding C functions instead using the C-Fortran interface features described in the Fortran Programming Guide.
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.
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r_acos( x )
|
real
|
function
|
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r_acosd( x )
|
real
|
function
|
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r_acosh( x )
|
real
|
function
|
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r_acosp( x )
|
real
|
function
|
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r_acospi( x )
|
real
|
function
|
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r_atan( x )
|
real
|
function
|
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r_atand( x )
|
real
|
function
|
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r_atanh( x )
|
real
|
function
|
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r_atanp( x )
|
real
|
function
|
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r_atanpi( x )
|
real
|
function
|
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r_asin( x )
|
real
|
function
|
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r_asind( x )
|
real
|
function
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r_asinh( x )
|
real
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function
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r_asinp( x )
|
real
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function
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r_asinpi( x )
|
real
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function
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r_atan2(( y, x )
|
real
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function
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r_atan2d( y, x )
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real
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function
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r_atan2pi( y, x )
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real
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function
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r_cbrt( x )
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real
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function
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r_ceil( x )
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real
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function
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r_copysign( x, y )
|
real
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function
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r_cos( x )
|
real
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function
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r_cosd( x )
|
real
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function
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r_cosh( x )
|
real
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function
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r_cosp( x )
|
real
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function
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r_cospi( x )
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real
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function
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r_erf( x )
|
real
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function
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r_erfc( x )
|
real
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function
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r_expm1( x )
|
real
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function
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r_floor( x )
|
real
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function
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r_hypot( x, y )
|
real
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function
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r_infinity( )
|
real
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function
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r_j0( x )
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real
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function
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r_j1( x )
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real
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function
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r_jn( n, x )
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real
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function
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ir_finite( x )
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integer
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function
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ir_fp_class( x )
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integer
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function
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ir_ilogb( x )
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integer
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function
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ir_irint( x )
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integer
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function
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ir_isinf( x )
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integer
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function
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ir_isnan( x )
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integer
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function
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ir_isnormal( x )
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integer
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function
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ir_issubnormal( x )
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integer
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function
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ir_iszero( x )
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integer
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function
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ir_signbit( x )
|
integer
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function
|
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r_addran()
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real
|
function
|
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r_addrans( x, p, l, u )
|
n/a
|
subroutine
|
|
r_lcran()
|
real
|
function
|
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r_lcrans( x, p, l, u )
|
n/a
|
subroutine
|
|
r_shufrans(x, p, l, u)
|
n/a
|
subroutine
|
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r_lgamma( x )
|
real
|
function
|
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r_logb( x )
|
real
|
function
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r_log1p( x )
|
real
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function
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r_log2( x )
|
real
|
function
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r_max_normal()
|
real
|
function
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r_max_subnormal()
|
real
|
function
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r_min_normal()
|
real
|
function
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r_min_subnormal()
|
real
|
function
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r_nextafter( x, y )
|
real
|
function
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r_quiet_nan( n )
|
real
|
function
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r_remainder( x, y )
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real
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function
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r_rint( x )
|
real
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function
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r_scalb( x, y )
|
real
|
function
|
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r_scalbn( x, n )
|
real
|
function
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r_signaling_nan( n )
|
real
|
function
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r_significand( x )
|
real
|
function
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r_sin( x )
|
real
|
function
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r_sind( x )
|
real
|
function
|
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r_sinh( x )
|
real
|
function
|
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r_sinp( x )
|
real
|
function
|
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r_sinpi( x )
|
real
|
function
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r_sincos( x, s, c )
|
n/a
|
subroutine
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r_sincosd( x, s, c )
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n/a
|
subroutine
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r_sincosp( x, s, c )
|
n/a
|
subroutine
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r_sincospi( x, s, c )
|
n/a
|
subroutine
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r_tan( x )
|
real
|
function
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r_tand( x )
|
real
|
function
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r_tanh( x )
|
real
|
function
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r_tanp( x )
|
real
|
function
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r_tanpi( x )
|
real
|
function
|
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r_y0( x )
|
real
|
function
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r_y1( x )
|
real
|
function
|
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r_yn( n,x )
|
real
|
function
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See Also
intro(3M)
Numerical Computation Guide
Fortran Library Reference Manual
Fortran Programming Guide