diff options
Diffstat (limited to 'miscutils/bc.c')
| -rw-r--r-- | miscutils/bc.c | 63 |
1 files changed, 26 insertions, 37 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c index 7179811fe..6463817bb 100644 --- a/miscutils/bc.c +++ b/miscutils/bc.c @@ -27,19 +27,6 @@ //config: easier. //config: 5) "read()" accepts expressions, not only numeric literals. //config: -//config: Options: -//config: -i --interactive force interactive mode -//config: -q --quiet don't print version and copyright -//config: -s --standard error if any non-POSIX extensions are used -//config: -w --warn warn if any non-POSIX extensions are used -//config: -l --mathlib use predefined math routines: -//config: s(expr) sine in radians -//config: c(expr) cosine in radians -//config: a(expr) arctangent, returning radians -//config: l(expr) natural log -//config: e(expr) raises e to the power of expr -//config: j(n, x) Bessel function of integer order n of x -//config: //config:config DC //config: bool "dc (36 kb)" //config: default y @@ -60,31 +47,32 @@ //config: whitespace where a register should be, it skips the whitespace. //config: If the character following is not a lowercase letter, an error //config: is issued. Otherwise, the register name is parsed by the -//config: following regex: -//config: [a-z][a-z0-9_]* +//config: following regex: [a-z][a-z0-9_]* //config: This generally means that register names will be surrounded by //config: whitespace. Examples: //config: l idx s temp L index S temp2 < do_thing //config: Also note that, like the FreeBSD dc, extended registers are not //config: allowed unless the "-x" option is given. //config: -//config:config FEATURE_DC_SMALL -//config: bool "Minimal dc implementation (4.2 kb), not using bc code base" +//config:if BC || DC # for menuconfig indenting +//config: +//config:config FEATURE_DC_BIG +//config: bool "Use bc code base for dc (larger, more features)" //config: depends on DC && !BC -//config: default n +//config: default y //config: //config:config FEATURE_DC_LIBM //config: bool "Enable power and exp functions (requires libm)" //config: default y -//config: depends on FEATURE_DC_SMALL +//config: depends on DC && !BC && !FEATURE_DC_BIG //config: help //config: Enable power and exp functions. //config: NOTE: This will require libm to be present for linking. //config: -//config:config FEATURE_BC_SIGNALS +//config:config FEATURE_BC_INTERACTIVE //config: bool "Interactive mode (+4kb)" //config: default y -//config: depends on (BC || DC) && !FEATURE_DC_SMALL +//config: depends on BC || (DC && FEATURE_DC_BIG) //config: help //config: Enable interactive mode: when started on a tty, //config: ^C interrupts execution and returns to command line, @@ -99,9 +87,9 @@ //config:config FEATURE_BC_LONG_OPTIONS //config: bool "Enable bc/dc long options" //config: default y -//config: depends on (BC || DC) && !FEATURE_DC_SMALL -//config: help -//config: Enable long options for bc and dc. +//config: depends on BC || (DC && FEATURE_DC_BIG) +//config: +//config:endif //applet:IF_BC(APPLET(bc, BB_DIR_USR_BIN, BB_SUID_DROP)) //applet:IF_DC(APPLET(dc, BB_DIR_USR_BIN, BB_SUID_DROP)) @@ -137,11 +125,11 @@ //usage: "obase = A\n" //usage: //usage:#define dc_trivial_usage -//usage: IF_NOT_FEATURE_DC_SMALL("[-x] ")"[-eSCRIPT]... [-fFILE]... [FILE]..." +//usage: IF_FEATURE_DC_BIG("[-x] ")"[-eSCRIPT]... [-fFILE]... [FILE]..." //usage: //usage:#define dc_full_usage "\n" //usage: "\nTiny RPN calculator. Operations:" -//usage: "\n+, -, *, /, %, ~, ^," IF_NOT_FEATURE_DC_SMALL(" |,") +//usage: "\n+, -, *, /, %, ~, ^," IF_FEATURE_DC_BIG(" |,") //usage: "\np - print top of the stack without popping" //usage: "\nf - print entire stack" //usage: "\nk - pop the value and set the precision" @@ -164,7 +152,7 @@ #include "libbb.h" #include "common_bufsiz.h" -#if ENABLE_FEATURE_DC_SMALL +#if !ENABLE_BC && !ENABLE_FEATURE_DC_BIG # include "dc.c" #else @@ -765,7 +753,7 @@ struct globals { BcVec input_buffer; - IF_FEATURE_BC_SIGNALS(smallint ttyin;) + IF_FEATURE_BC_INTERACTIVE(smallint ttyin;) IF_FEATURE_CLEAN_UP(smallint exiting;) BcProgram prog; @@ -788,7 +776,7 @@ struct globals { #define G_posix (ENABLE_BC && (option_mask32 & BC_FLAG_S)) #define G_warn (ENABLE_BC && (option_mask32 & BC_FLAG_W)) #define G_exreg (ENABLE_DC && (option_mask32 & DC_FLAG_X)) -#if ENABLE_FEATURE_BC_SIGNALS +#if ENABLE_FEATURE_BC_INTERACTIVE # define G_interrupt bb_got_signal # define G_ttyin G.ttyin #else @@ -876,7 +864,7 @@ struct globals { // To make code more readable, each such function has a "z" // ("always returning zero") prefix, i.e. zbc_foo or zdc_foo. // -#if ENABLE_FEATURE_BC_SIGNALS || ENABLE_FEATURE_CLEAN_UP +#if ENABLE_FEATURE_BC_INTERACTIVE || ENABLE_FEATURE_CLEAN_UP # define ERRORS_ARE_FATAL 0 # define ERRORFUNC /*nothing*/ # define IF_ERROR_RETURN_POSSIBLE(a) a @@ -906,7 +894,7 @@ static void fflush_and_check(void) #if ENABLE_FEATURE_CLEAN_UP #define QUIT_OR_RETURN_TO_MAIN \ do { \ - IF_FEATURE_BC_SIGNALS(G_ttyin = 0;) /* do not loop in main loop anymore */ \ + IF_FEATURE_BC_INTERACTIVE(G_ttyin = 0;) /* do not loop in main loop anymore */ \ G_exiting = 1; \ return BC_STATUS_FAILURE; \ } while (0) @@ -1834,7 +1822,7 @@ static FAST_FUNC BC_STATUS zbc_num_k(BcNum *restrict a, BcNum *restrict b, c->num[i + j] += (BcDig) carry; len = BC_MAX(len, i + j + !!carry); -#if ENABLE_FEATURE_BC_SIGNALS +#if ENABLE_FEATURE_BC_INTERACTIVE // a=2^1000000 // a*a <- without check below, this will not be interruptible if (G_interrupt) return BC_STATUS_FAILURE; @@ -2001,7 +1989,7 @@ static FAST_FUNC BC_STATUS zbc_num_d(BcNum *a, BcNum *b, BcNum *restrict c, size for (q = 0; n[len] != 0 || bc_num_compare(n, b->num, len) >= 0; ++q) bc_num_subArrays(n, b->num, len); c->num[i] = q; -#if ENABLE_FEATURE_BC_SIGNALS +#if ENABLE_FEATURE_BC_INTERACTIVE // a=2^100000 // scale=40000 // 1/a <- without check below, this will not be interruptible @@ -2486,7 +2474,7 @@ static void xc_read_line(BcVec *vec, FILE *fp) bc_vec_pop_all(vec); fflush_and_check(); -#if ENABLE_FEATURE_BC_SIGNALS +#if ENABLE_FEATURE_BC_INTERACTIVE if (G_interrupt) { // ^C was pressed intr: if (fp != stdin) { @@ -2533,7 +2521,7 @@ static void xc_read_line(BcVec *vec, FILE *fp) bool bad_chars = 0; do { -#if ENABLE_FEATURE_BC_SIGNALS +#if ENABLE_FEATURE_BC_INTERACTIVE if (G_interrupt) { // ^C was pressed: ignore entire line, get another one bc_vec_pop_all(vec); @@ -7223,7 +7211,7 @@ static int xc_vm_init(const char *env_len) //TODO: in GNU bc, the check is (isatty(0) && isatty(1)), //-i option unconditionally enables this regardless of isatty(): if (isatty(0)) { -#if ENABLE_FEATURE_BC_SIGNALS +#if ENABLE_FEATURE_BC_INTERACTIVE G_ttyin = 1; // With SA_RESTART, most system calls will restart // (IOW: they won't fail with EINTR). @@ -7342,4 +7330,5 @@ int dc_main(int argc UNUSED_PARAM, char **argv) } #endif -#endif // not DC_SMALL +#endif // DC_BIG + |