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- TANH(3I) Last changed: 4-13-99
-
-
- NNAAMMEE
- TTAANNHH, DDTTAANNHH, QQTTAANNHH - Computes hyperbolic tangent
-
- SSYYNNOOPPSSIISS
- TTAANNHH (([XX==]_x))
- DDTTAANNHH (([XX==]_x))
- QQTTAANNHH (([XX==]_x))
-
- IIMMPPLLEEMMEENNTTAATTIIOONN
- UNICOS, UNICOS/mk, IRIX systems
-
- CF90, MIPSpro 7 Fortran 90, MIPSpro Fortran 77
-
- SSTTAANNDDAARRDDSS
- Fortran
-
- Fortran extension: QQTTAANNHH
-
- DDEESSCCRRIIPPTTIIOONN
- The TTAANNHH, DDTTAANNHH, and QQTTAANNHH intrinsic functions compute the hyperbolic
- tangent of _x. These functions evaluate _y = tanh(_x). They are
- elemental functions. They accept the following argument:
-
- _x Must be of type real. The type and kind type of _x is
- identical to the type and kind type of the return value.
- See the RETURN VALUES section for information on input data
- types and return values.
-
- TTAANNHH is the generic function name; the others are specifics.
-
- NNOOTTEESS
- The TTAANNHH and DDTTAANNHH intrinsic function names can be passed as
- arguments; the other cannot.
-
- On CRAY T90 systems that support IEEE arithmetic, these return values
- occur:
-
- TTAANNHH((_x)) = 1.0 if _x > 19.1
-
- TTAANNHH((_x)) = -1.0 if _x < -19.1
-
- TTAANNHH((NaN)) = NaN
-
- RREETTUURRNN VVAALLUUEESS
- TTAANNHH returns the real hyperbolic tangent of its real argument.
-
- DDTTAANNHH returns the double-precision real hyperbolic tangent of its
- double-precision argument.
-
- QQTTAANNHH returns the quad-precision real hyperbolic tangent of its
- quad-precision argument.
-
- SSEEEE AALLSSOO
- _I_n_t_r_i_n_s_i_c _P_r_o_c_e_d_u_r_e_s _R_e_f_e_r_e_n_c_e _M_a_n_u_a_l for the printed version of this
- man page.
-