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@@ -2042,4 +2042,720 @@ round_int( x ) |
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} |
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} |
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} |
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} |
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/*************************************************************** |
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FUNCTION: fnc_cosh() |
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DESCRIPTION: This C function implements the BASIC |
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predefined COSH function, returning the |
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hyperbolic cosine of the argument. |
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SYNTAX: COSH( number ) |
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***************************************************************/ |
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#if ANSI_C |
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struct bwb_variable * |
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fnc_cosh( int argc, struct bwb_variable *argv, int unique_id ) |
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#else |
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struct bwb_variable * |
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fnc_cosh( argc, argv, unique_id ) |
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int argc; |
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struct bwb_variable *argv; |
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int unique_id; |
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#endif |
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{ |
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static struct bwb_variable nvar; |
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static int init = FALSE; |
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/* initialize the variable if necessary */ |
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if ( init == FALSE ) |
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{ |
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init = TRUE; |
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var_make( &nvar, NUMBER ); |
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} |
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#if INTENSIVE_DEBUG |
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sprintf( bwb_ebuf, "in fnc_cosh(): received f_arg <%f> ", |
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var_getnval( &( argv[ 0 ] ) ) ); |
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bwb_debug( bwb_ebuf ); |
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#endif |
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#if PROG_ERRORS |
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if ( argc < 1 ) |
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{ |
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sprintf( bwb_ebuf, "Not enough parameters (%d) to function COSH().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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else if ( argc > 1 ) |
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{ |
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sprintf( bwb_ebuf, "Too many parameters (%d) to function COSH().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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#else |
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if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
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{ |
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return NULL; |
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} |
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#endif |
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/* assign values */ |
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* var_findnval( &nvar, nvar.array_pos ) |
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= (bnumber) cosh( (double) var_getnval( &( argv[ 0 ] ) ) ); |
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return &nvar; |
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} |
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/*************************************************************** |
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FUNCTION: fnc_sinh() |
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DESCRIPTION: This C function implements the BASIC |
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predefined SINH function, returning the |
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hyperbolic sine of the argument. |
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SYNTAX: SINH( number ) |
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***************************************************************/ |
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#if ANSI_C |
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struct bwb_variable * |
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fnc_sinh( int argc, struct bwb_variable *argv, int unique_id ) |
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#else |
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struct bwb_variable * |
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fnc_sinh( argc, argv, unique_id ) |
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int argc; |
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struct bwb_variable *argv; |
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int unique_id; |
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#endif |
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{ |
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static struct bwb_variable nvar; |
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static int init = FALSE; |
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/* initialize the variable if necessary */ |
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if ( init == FALSE ) |
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{ |
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init = TRUE; |
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var_make( &nvar, NUMBER ); |
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} |
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#if INTENSIVE_DEBUG |
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sprintf( bwb_ebuf, "in fnc_sinh(): received f_arg <%f> ", |
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var_getnval( &( argv[ 0 ] ) ) ); |
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bwb_debug( bwb_ebuf ); |
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#endif |
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#if PROG_ERRORS |
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if ( argc < 1 ) |
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{ |
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sprintf( bwb_ebuf, "Not enough parameters (%d) to function SINH().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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else if ( argc > 1 ) |
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{ |
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sprintf( bwb_ebuf, "Too many parameters (%d) to function SINH().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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#else |
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if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
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{ |
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return NULL; |
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} |
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#endif |
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/* assign values */ |
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* var_findnval( &nvar, nvar.array_pos ) |
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= (bnumber) sinh( (double) var_getnval( &( argv[ 0 ] ) ) ); |
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return &nvar; |
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} |
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/*************************************************************** |
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FUNCTION: fnc_tanh() |
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DESCRIPTION: This C function implements the BASIC |
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predefined TANH function, returning the |
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hyperbolic tangent of the argument. |
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SYNTAX: TANH( number ) |
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***************************************************************/ |
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#if ANSI_C |
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struct bwb_variable * |
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fnc_tanh( int argc, struct bwb_variable *argv, int unique_id ) |
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#else |
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struct bwb_variable * |
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fnc_tanh( argc, argv, unique_id ) |
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int argc; |
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struct bwb_variable *argv; |
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int unique_id; |
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#endif |
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{ |
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static struct bwb_variable nvar; |
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static int init = FALSE; |
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/* initialize the variable if necessary */ |
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if ( init == FALSE ) |
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{ |
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init = TRUE; |
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var_make( &nvar, NUMBER ); |
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} |
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#if INTENSIVE_DEBUG |
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sprintf( bwb_ebuf, "in fnc_tanh(): received f_arg <%f> ", |
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var_getnval( &( argv[ 0 ] ) ) ); |
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bwb_debug( bwb_ebuf ); |
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#endif |
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#if PROG_ERRORS |
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if ( argc < 1 ) |
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{ |
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sprintf( bwb_ebuf, "Not enough parameters (%d) to function TANH().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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else if ( argc > 1 ) |
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{ |
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sprintf( bwb_ebuf, "Too many parameters (%d) to function TANH().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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#else |
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if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
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{ |
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return NULL; |
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} |
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#endif |
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/* assign values */ |
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* var_findnval( &nvar, nvar.array_pos ) |
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= (bnumber) tanh( (double) var_getnval( &( argv[ 0 ] ) ) ); |
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return &nvar; |
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} |
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/*************************************************************** |
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FUNCTION: fnc_log10() |
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DESCRIPTION: This C function implements the BASIC |
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predefined LOG10 function, returning the |
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decimal logarithm of the argument. |
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SYNTAX: LOG10( number ) |
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***************************************************************/ |
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#if ANSI_C |
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struct bwb_variable * |
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fnc_log10( int argc, struct bwb_variable *argv, int unique_id ) |
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#else |
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struct bwb_variable * |
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fnc_log10( argc, argv, unique_id ) |
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int argc; |
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struct bwb_variable *argv; |
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int unique_id; |
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#endif |
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{ |
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static struct bwb_variable nvar; |
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static int init = FALSE; |
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/* initialize the variable if necessary */ |
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if ( init == FALSE ) |
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{ |
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init = TRUE; |
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var_make( &nvar, NUMBER ); |
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} |
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#if INTENSIVE_DEBUG |
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sprintf( bwb_ebuf, "in fnc_log10(): received f_arg <%f> ", |
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var_getnval( &( argv[ 0 ] ) ) ); |
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bwb_debug( bwb_ebuf ); |
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#endif |
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#if PROG_ERRORS |
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if ( argc < 1 ) |
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{ |
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sprintf( bwb_ebuf, "Not enough parameters (%d) to function LOG10().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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else if ( argc > 1 ) |
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{ |
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sprintf( bwb_ebuf, "Too many parameters (%d) to function LOG10().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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#else |
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if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
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{ |
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return NULL; |
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} |
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#endif |
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/* assign values */ |
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* var_findnval( &nvar, nvar.array_pos ) |
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= (bnumber) log10( (double) var_getnval( &( argv[ 0 ] ) ) ); |
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return &nvar; |
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} |
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/*************************************************************** |
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FUNCTION: fnc_log2() |
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DESCRIPTION: This C function implements the BASIC |
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predefined LOG2 function, returning the |
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base 2 logarithm of the argument. |
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SYNTAX: LOG2( number ) |
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***************************************************************/ |
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#if ANSI_C |
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struct bwb_variable * |
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fnc_log2( int argc, struct bwb_variable *argv, int unique_id ) |
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#else |
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struct bwb_variable * |
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fnc_log2( argc, argv, unique_id ) |
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int argc; |
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struct bwb_variable *argv; |
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int unique_id; |
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#endif |
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{ |
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static struct bwb_variable nvar; |
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static int init = FALSE; |
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/* initialize the variable if necessary */ |
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if ( init == FALSE ) |
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{ |
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init = TRUE; |
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var_make( &nvar, NUMBER ); |
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} |
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#if INTENSIVE_DEBUG |
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sprintf( bwb_ebuf, "in fnc_log2(): received f_arg <%f> ", |
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var_getnval( &( argv[ 0 ] ) ) ); |
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bwb_debug( bwb_ebuf ); |
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#endif |
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#if PROG_ERRORS |
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if ( argc < 1 ) |
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{ |
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sprintf( bwb_ebuf, "Not enough parameters (%d) to function LOG2().", |
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argc ); |
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bwb_error( bwb_ebuf ); |
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return NULL; |
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} |
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else if ( argc > 1 ) |
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{ |
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|
|
|
sprintf( bwb_ebuf, "Too many parameters (%d) to function LOG2().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#else |
|
|
|
|
|
if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
/* assign values */ |
|
|
|
|
|
|
|
|
|
|
|
* var_findnval( &nvar, nvar.array_pos ) |
|
|
|
|
|
= (bnumber) log( (double) var_getnval( &( argv[ 0 ] ) ) )/log(2.0); |
|
|
|
|
|
|
|
|
|
|
|
return &nvar; |
|
|
|
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*************************************************************** |
|
|
|
|
|
|
|
|
|
|
|
FUNCTION: fnc_acos() |
|
|
|
|
|
|
|
|
|
|
|
DESCRIPTION: This C function implements the BASIC |
|
|
|
|
|
predefined ACOS function, returning the |
|
|
|
|
|
arccosine of the argument. |
|
|
|
|
|
|
|
|
|
|
|
SYNTAX: ACOS( number ) |
|
|
|
|
|
|
|
|
|
|
|
***************************************************************/ |
|
|
|
|
|
|
|
|
|
|
|
#if ANSI_C |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_acos( int argc, struct bwb_variable *argv, int unique_id ) |
|
|
|
|
|
#else |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_acos( argc, argv, unique_id ) |
|
|
|
|
|
int argc; |
|
|
|
|
|
struct bwb_variable *argv; |
|
|
|
|
|
int unique_id; |
|
|
|
|
|
#endif |
|
|
|
|
|
{ |
|
|
|
|
|
static struct bwb_variable nvar; |
|
|
|
|
|
static int init = FALSE; |
|
|
|
|
|
|
|
|
|
|
|
/* initialize the variable if necessary */ |
|
|
|
|
|
|
|
|
|
|
|
if ( init == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
init = TRUE; |
|
|
|
|
|
var_make( &nvar, NUMBER ); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
#if INTENSIVE_DEBUG |
|
|
|
|
|
sprintf( bwb_ebuf, "in fnc_acos(): received f_arg <%f> ", |
|
|
|
|
|
var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
bwb_debug( bwb_ebuf ); |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
#if PROG_ERRORS |
|
|
|
|
|
if ( argc < 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Not enough parameters (%d) to function ACOS().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
else if ( argc > 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Too many parameters (%d) to function ACOS().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#else |
|
|
|
|
|
if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
/* assign values */ |
|
|
|
|
|
|
|
|
|
|
|
* var_findnval( &nvar, nvar.array_pos ) |
|
|
|
|
|
= (bnumber) acos( (double) var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
|
|
|
|
|
|
return &nvar; |
|
|
|
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
/*************************************************************** |
|
|
|
|
|
|
|
|
|
|
|
FUNCTION: fnc_asin() |
|
|
|
|
|
|
|
|
|
|
|
DESCRIPTION: This C function implements the BASIC |
|
|
|
|
|
predefined ASIN function, returning the |
|
|
|
|
|
arc sine of the argument. |
|
|
|
|
|
|
|
|
|
|
|
SYNTAX: ASIN( number ) |
|
|
|
|
|
|
|
|
|
|
|
***************************************************************/ |
|
|
|
|
|
|
|
|
|
|
|
#if ANSI_C |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_asin( int argc, struct bwb_variable *argv, int unique_id ) |
|
|
|
|
|
#else |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_asin( argc, argv, unique_id ) |
|
|
|
|
|
int argc; |
|
|
|
|
|
struct bwb_variable *argv; |
|
|
|
|
|
int unique_id; |
|
|
|
|
|
#endif |
|
|
|
|
|
{ |
|
|
|
|
|
static struct bwb_variable nvar; |
|
|
|
|
|
static int init = FALSE; |
|
|
|
|
|
|
|
|
|
|
|
/* initialize the variable if necessary */ |
|
|
|
|
|
|
|
|
|
|
|
if ( init == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
init = TRUE; |
|
|
|
|
|
var_make( &nvar, NUMBER ); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
#if INTENSIVE_DEBUG |
|
|
|
|
|
sprintf( bwb_ebuf, "in fnc_asin(): received f_arg <%f> ", |
|
|
|
|
|
var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
bwb_debug( bwb_ebuf ); |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
#if PROG_ERRORS |
|
|
|
|
|
if ( argc < 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Not enough parameters (%d) to function ASIN().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
else if ( argc > 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Too many parameters (%d) to function ASIN().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#else |
|
|
|
|
|
if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
/* assign values */ |
|
|
|
|
|
|
|
|
|
|
|
* var_findnval( &nvar, nvar.array_pos ) |
|
|
|
|
|
= (bnumber) asin( (double) var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
|
|
|
|
|
|
return &nvar; |
|
|
|
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/*************************************************************** |
|
|
|
|
|
|
|
|
|
|
|
FUNCTION: fnc_cotan() |
|
|
|
|
|
|
|
|
|
|
|
DESCRIPTION: This C function implements the BASIC |
|
|
|
|
|
predefined COT function, returning the |
|
|
|
|
|
cotangent of the argument. |
|
|
|
|
|
|
|
|
|
|
|
SYNTAX: COT( number ) |
|
|
|
|
|
|
|
|
|
|
|
***************************************************************/ |
|
|
|
|
|
|
|
|
|
|
|
#if ANSI_C |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_cotan( int argc, struct bwb_variable *argv, int unique_id ) |
|
|
|
|
|
#else |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_cotan( argc, argv, unique_id ) |
|
|
|
|
|
int argc; |
|
|
|
|
|
struct bwb_variable *argv; |
|
|
|
|
|
int unique_id; |
|
|
|
|
|
#endif |
|
|
|
|
|
{ |
|
|
|
|
|
static struct bwb_variable nvar; |
|
|
|
|
|
static int init = FALSE; |
|
|
|
|
|
|
|
|
|
|
|
/* initialize the variable if necessary */ |
|
|
|
|
|
|
|
|
|
|
|
if ( init == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
init = TRUE; |
|
|
|
|
|
var_make( &nvar, NUMBER ); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
#if INTENSIVE_DEBUG |
|
|
|
|
|
sprintf( bwb_ebuf, "in fnc_cotan(): received f_arg <%f> ", |
|
|
|
|
|
var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
bwb_debug( bwb_ebuf ); |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
#if PROG_ERRORS |
|
|
|
|
|
if ( argc < 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Not enough parameters (%d) to function COT().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
else if ( argc > 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Too many parameters (%d) to function COT().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#else |
|
|
|
|
|
if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
/* assign values */ |
|
|
|
|
|
|
|
|
|
|
|
* var_findnval( &nvar, nvar.array_pos ) |
|
|
|
|
|
= (bnumber) 1.0/tan( (double) var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
|
|
|
|
|
|
return &nvar; |
|
|
|
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/*************************************************************** |
|
|
|
|
|
|
|
|
|
|
|
FUNCTION: fnc_cosecant() |
|
|
|
|
|
|
|
|
|
|
|
DESCRIPTION: This C function implements the BASIC |
|
|
|
|
|
predefined CSC function, returning the |
|
|
|
|
|
cosecant(=1/sin) of the argument. |
|
|
|
|
|
|
|
|
|
|
|
SYNTAX: CSC( number ) |
|
|
|
|
|
|
|
|
|
|
|
***************************************************************/ |
|
|
|
|
|
|
|
|
|
|
|
#if ANSI_C |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_cosecant( int argc, struct bwb_variable *argv, int unique_id ) |
|
|
|
|
|
#else |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_cosecant( argc, argv, unique_id ) |
|
|
|
|
|
int argc; |
|
|
|
|
|
struct bwb_variable *argv; |
|
|
|
|
|
int unique_id; |
|
|
|
|
|
#endif |
|
|
|
|
|
{ |
|
|
|
|
|
static struct bwb_variable nvar; |
|
|
|
|
|
static int init = FALSE; |
|
|
|
|
|
|
|
|
|
|
|
/* initialize the variable if necessary */ |
|
|
|
|
|
|
|
|
|
|
|
if ( init == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
init = TRUE; |
|
|
|
|
|
var_make( &nvar, NUMBER ); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
#if INTENSIVE_DEBUG |
|
|
|
|
|
sprintf( bwb_ebuf, "in fnc_cosecant(): received f_arg <%f> ", |
|
|
|
|
|
var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
bwb_debug( bwb_ebuf ); |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
#if PROG_ERRORS |
|
|
|
|
|
if ( argc < 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Not enough parameters (%d) to function CSC().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
else if ( argc > 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Too many parameters (%d) to function CSC().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#else |
|
|
|
|
|
if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
return NULL; |
|
|
|
|
|
} |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
|
|
/* assign values */ |
|
|
|
|
|
|
|
|
|
|
|
* var_findnval( &nvar, nvar.array_pos ) |
|
|
|
|
|
= (bnumber) 1.0/sin( (double) var_getnval( &( argv[ 0 ] ) ) ); |
|
|
|
|
|
|
|
|
|
|
|
return &nvar; |
|
|
|
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*************************************************************** |
|
|
|
|
|
|
|
|
|
|
|
FUNCTION: fnc_secant() |
|
|
|
|
|
|
|
|
|
|
|
DESCRIPTION: This C function implements the BASIC |
|
|
|
|
|
predefined LOG2 function, returning the |
|
|
|
|
|
secant(=1/cos) of the argument. |
|
|
|
|
|
|
|
|
|
|
|
SYNTAX: SEC( number ) |
|
|
|
|
|
|
|
|
|
|
|
***************************************************************/ |
|
|
|
|
|
|
|
|
|
|
|
#if ANSI_C |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_secant( int argc, struct bwb_variable *argv, int unique_id ) |
|
|
|
|
|
#else |
|
|
|
|
|
struct bwb_variable * |
|
|
|
|
|
fnc_secant( argc, argv, unique_id ) |
|
|
|
|
|
int argc; |
|
|
|
|
|
struct bwb_variable *argv; |
|
|
|
|
|
int unique_id; |
|
|
|
|
|
#endif |
|
|
|
|
|
{ |
|
|
|
|
|
static struct bwb_variable nvar; |
|
|
|
|
|
static int init = FALSE; |
|
|
|
|
|
|
|
|
|
|
|
/* initialize the variable if necessary */ |
|
|
|
|
|
|
|
|
|
|
|
if ( init == FALSE ) |
|
|
|
|
|
{ |
|
|
|
|
|
init = TRUE; |
|
|
|
|
|
var_make( &nvar, NUMBER ); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
#if INTENSIVE_DEBUG |
|
|
|
|
|
sprintf( bwb_ebuf, "in fnc_secant(): received f_arg <%f> ", |
|
|
|
|
|
var_getnval( &( argv[ 0 ] ) ) ); |
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|
bwb_debug( bwb_ebuf ); |
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|
#endif |
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|
#if PROG_ERRORS |
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|
|
if ( argc < 1 ) |
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|
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|
|
{ |
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|
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|
|
sprintf( bwb_ebuf, "Not enough parameters (%d) to function SEC().", |
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|
|
argc ); |
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|
|
bwb_error( bwb_ebuf ); |
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|
return NULL; |
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|
} |
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|
|
else if ( argc > 1 ) |
|
|
|
|
|
{ |
|
|
|
|
|
sprintf( bwb_ebuf, "Too many parameters (%d) to function SEC().", |
|
|
|
|
|
argc ); |
|
|
|
|
|
bwb_error( bwb_ebuf ); |
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|
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|
|
return NULL; |
|
|
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|
|
} |
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|
|
#else |
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|
|
if ( fnc_checkargs( argc, argv, 1, 1 ) == FALSE ) |
|
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|
|
{ |
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|
|
return NULL; |
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|
} |
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|
#endif |
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|
/* assign values */ |
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|
|
* var_findnval( &nvar, nvar.array_pos ) |
|
|
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|
|
= (bnumber) 1.0/cos( (double) var_getnval( &( argv[ 0 ] ) ) ); |
|
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|
|
return &nvar; |
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|
|
|
|
} |