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- TAN(3I) Last changed: 4-13-99
-
-
- NNAAMMEE
- TTAANN, DDTTAANN, QQTTAANN, TTAANNDD, DDTTAANNDD, QQTTAANNDD - Computes tangent
-
- SSYYNNOOPPSSIISS
- TTAANN (([XX==]_x))
- DDTTAANN (([XX==]_x))
- QQTTAANN (([XX==]_x))
-
- TTAANNDD (([XX==]_x))
- DDTTAANNDD (([XX==]_x))
- QQTTAANNDD (([XX==]_x))
-
- IIMMPPLLEEMMEENNTTAATTIIOONN
- UNICOS, UNICOS/mk, IRIX systems
-
- CF90, MIPSpro 7 Fortran 90, MIPSpro Fortran 77
-
- SSTTAANNDDAARRDDSS
- Fortran
-
- Fortran extension: QQTTAANN, TTAANNDD, DDTTAANNDD, QQTTAANNDD
-
- DDEESSCCRRIIPPTTIIOONN
- These functions evaluate _y = tan(_x). They are elemental intrinsic
- functions. They accept the following argument:
-
- _x Must be of type real. For TTAANN, DDTTAANN, and QQTTAANN, _x must be
- specified in radians and is treated as modulo 2 * pi. For
- TTAANNDD, DDTTAANNDD, and QQTTAANNDD, _x must be specified in degrees and
- is treated as modulo 360.
-
- TTAANN and TTAANNDD are generic function names; the rest are specifics.
-
- A vector version of the single-precision and double-precision TTAANN
- intrinsic exists on IRIX systems and is used when --OO33 is specified on
- the compiler command line.
-
- NNOOTTEESS
- The TTAANN and DDTTAANN intrinsic function names can be passed as arguments;
- the others cannot.
-
- On UNICOS and UNICOS/mk systems, the following return values occur:
-
- * On systems that support the IEEE standard for floating-point
- arithmetic, 25
- TTAANN((_x)) = NaN if |_x| > pi * 2
-
- * On systems that do not support the IEEE standard for floating-point
- arithmetic, 25
- TTAANN((_x)) = 0 if |_x| > pi * 2
-
- On IRIX systems, the following return value occurs:
- 19
- TTAANN((_x)) = NaN if |_x| > pi * 2
-
- On all systems that support the IEEE standard for floating-point
- arithmetic, the following is true:
-
- TTAANN((NaN)) = NaN
-
- RREETTUURRNN VVAALLUUEESS
- TTAANN and TTAANNDD return the real tangent of their real argument.
-
- DDTTAANN and DDTTAANNDD return the double-precision real tangent of their
- double-precision real argument.
-
- QQTTAANN and QQTTAANNDD return the quad-precision real tangent of their
- quad-precision real argument.
-
- The data type and kind type for single-precision, double-precision,
- and quad-precision values differ depending on your platform. For
- platform-specific information, see the TERMINOLOGY section of the
- IINNTTRROO__IINNTTRRIINN(3I) man page.
-
- 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.
-