Nim - This repository contains the Nim compiler, Nim's stdlib, tools, and documentation. (mirror)

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Diffstat (limited to 'compiler/lambdalifting.nim')

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/* * TCC - Tiny C Compiler * * Copyright (c) 2001-2004 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #define _GNU_SOURCE #include "config.h" #ifdef CONFIG_TCCBOOT #include "tccboot.h" #define CONFIG_TCC_STATIC #else #include <stdlib.h> #include <stdio.h> #include <stdarg.h> #include <string.h> #include <errno.h> #include <math.h> #include <signal.h> #include <fcntl.h> #include <setjmp.h> #include <time.h> #ifdef _WIN32 #include <windows.h> #include <sys/timeb.h> #include <io.h> /* open, close etc. */ #include <direct.h> /* getcwd */ #define inline __inline #define inp next_inp #endif #ifndef _WIN32 #include <unistd.h> #include <sys/time.h> #include <sys/ucontext.h> #include <sys/mman.h> #endif #endif /* !CONFIG_TCCBOOT */ #ifndef PAGESIZE #define PAGESIZE 4096 #endif #include "elf.h" #include "stab.h" #ifndef O_BINARY #define O_BINARY 0 #endif #include "libtcc.h" /* parser debug */ //#define PARSE_DEBUG /* preprocessor debug */ //#define PP_DEBUG /* include file debug */ //#define INC_DEBUG //#define MEM_DEBUG /* assembler debug */ //#define ASM_DEBUG /* target selection */ //#define TCC_TARGET_I386 /* i386 code generator */ //#define TCC_TARGET_ARM /* ARMv4 code generator */ //#define TCC_TARGET_C67 /* TMS320C67xx code generator */ //#define TCC_TARGET_X86_64 /* x86-64 code generator */ /* default target is I386 */ #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \ !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64) #define TCC_TARGET_I386 #endif #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \ !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64) #define CONFIG_TCC_BCHECK /* enable bound checking code */ #endif #if defined(_WIN32) && !defined(TCC_TARGET_PE) #define CONFIG_TCC_STATIC #endif /* define it to include assembler support */ #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67) && \ !defined(TCC_TARGET_X86_64) #define CONFIG_TCC_ASM #endif /* object format selection */ #if defined(TCC_TARGET_C67) #define TCC_TARGET_COFF #endif #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT) #define CONFIG_TCC_BACKTRACE #endif #define FALSE 0 #define false 0 #define TRUE 1 #define true 1 typedef int BOOL; /* path to find crt1.o, crti.o and crtn.o. Only needed when generating executables or dlls */ #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib" #define INCLUDE_STACK_SIZE 32 #define IFDEF_STACK_SIZE 64 #define VSTACK_SIZE 256 #define STRING_MAX_SIZE 1024 #define PACK_STACK_SIZE 8 #define TOK_HASH_SIZE 8192 /* must be a power of two */ #define TOK_ALLOC_INCR 512 /* must be a power of two */ #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */ /* token symbol management */ typedef struct TokenSym { struct TokenSym *hash_next; struct Sym *sym_define; /* direct pointer to define */ struct Sym *sym_label; /* direct pointer to label */ struct Sym *sym_struct; /* direct pointer to structure */ struct Sym *sym_identifier; /* direct pointer to identifier */ int tok; /* token number */ int len; char str[1]; } TokenSym; #ifdef TCC_TARGET_PE typedef unsigned short nwchar_t; #else typedef int nwchar_t; #endif typedef struct CString { int size; /* size in bytes */ void *data; /* either 'char *' or 'nwchar_t *' */ int size_allocated; void *data_allocated; /* if non NULL, data has been malloced */ } CString; /* type definition */ typedef struct CType { int t; struct Sym *ref; } CType; /* constant value */ typedef union CValue { long double ld; double d; float f; int i; unsigned int ui; unsigned int ul; /* address (should be unsigned long on 64 bit cpu) */ long long ll; unsigned long long ull; struct CString *cstr; void *ptr; int tab[1]; } CValue; /* value on stack */ typedef struct SValue { CType type; /* type */ unsigned short r; /* register + flags */ unsigned short r2; /* second register, used for 'long long' type. If not used, set to VT_CONST */ CValue c; /* constant, if VT_CONST */ struct Sym *sym; /* symbol, if (VT_SYM | VT_CONST) */ } SValue; /* symbol management */ typedef struct Sym { int v; /* symbol token */ long r; /* associated register */ long c; /* associated number */ CType type; /* associated type */ struct Sym *next; /* next related symbol */ struct Sym *prev; /* prev symbol in stack */ struct Sym *prev_tok; /* previous symbol for this token */ } Sym; /* section definition */ /* XXX: use directly ELF structure for parameters ? */ /* special flag to indicate that the section should not be linked to the other ones */ #define SHF_PRIVATE 0x80000000 /* special flag, too */ #define SECTION_ABS ((void *)1) typedef struct Section { unsigned long data_offset; /* current data offset */ unsigned char *data; /* section data */ unsigned long data_allocated; /* used for realloc() handling */ int sh_name; /* elf section name (only used during output) */ int sh_num; /* elf section number */ int sh_type; /* elf section type */ int sh_flags; /* elf section flags */ int sh_info; /* elf section info */ int sh_addralign; /* elf section alignment */ int sh_entsize; /* elf entry size */ unsigned long sh_size; /* section size (only used during output) */ unsigned long sh_addr; /* address at which the section is relocated */ unsigned long sh_offset; /* file offset */ int nb_hashed_syms; /* used to resize the hash table */ struct Section *link; /* link to another section */ struct Section *reloc; /* corresponding section for relocation, if any */ struct Section *hash; /* hash table for symbols */ struct Section *next; char name[1]; /* section name */ } Section; typedef struct DLLReference { int level; void *handle; char name[1]; } DLLReference; /* GNUC attribute definition */ typedef struct AttributeDef { int aligned; int packed; Section *section; int func_attr; /* calling convention, exports, ... */ } AttributeDef; /* -------------------------------------------------- */ /* gr: wrappers for casting sym->r for other purposes */ typedef struct { unsigned func_call : 8, func_args : 8, func_export : 1; } func_attr_t; #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call) #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export) #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args) #define INLINE_DEF(r) (*(int **)&(r)) /* -------------------------------------------------- */ #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */ #define SYM_FIELD 0x20000000 /* struct/union field symbol space */ #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */ /* stored in 'Sym.c' field */ #define FUNC_NEW 1 /* ansi function prototype */ #define FUNC_OLD 2 /* old function prototype */ #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */ /* stored in 'Sym.r' field */ #define FUNC_CDECL 0 /* standard c call */ #define FUNC_STDCALL 1 /* pascal c call */ #define FUNC_FASTCALL1 2 /* first param in %eax */ #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */ #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */ #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */ /* field 'Sym.t' for macros */ #define MACRO_OBJ 0 /* object like macro */ #define MACRO_FUNC 1 /* function like macro */ /* field 'Sym.r' for C labels */ #define LABEL_DEFINED 0 /* label is defined */ #define LABEL_FORWARD 1 /* label is forward defined */ #define LABEL_DECLARED 2 /* label is declared but never used */ /* type_decl() types */ #define TYPE_ABSTRACT 1 /* type without variable */ #define TYPE_DIRECT 2 /* type with variable */ #define IO_BUF_SIZE 8192 typedef struct BufferedFile { uint8_t *buf_ptr; uint8_t *buf_end; int fd; int line_num; /* current line number - here to simplify code */ int ifndef_macro; /* #ifndef macro / #endif search */ int ifndef_macro_saved; /* saved ifndef_macro */ int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */ char inc_type; /* type of include */ char inc_filename[512]; /* filename specified by the user */ char filename[1024]; /* current filename - here to simplify code */ unsigned char buffer[IO_BUF_SIZE + 1]; /* extra size for CH_EOB char */ } BufferedFile; #define CH_EOB '\\' /* end of buffer or '\0' char in file */ #define CH_EOF (-1) /* end of file */ /* parsing state (used to save parser state to reparse part of the source several times) */ typedef struct ParseState { int *macro_ptr; int line_num; int tok; CValue tokc; } ParseState; /* used to record tokens */ typedef struct TokenString { int *str; int len; int allocated_len; int last_line_num; } TokenString; /* include file cache, used to find files faster and also to eliminate inclusion if the include file is protected by #ifndef ... #endif */ typedef struct CachedInclude { int ifndef_macro; int hash_next; /* -1 if none */ char type; /* '"' or '>' to give include type */ char filename[1]; /* path specified in #include */ } CachedInclude; #define CACHED_INCLUDES_HASH_SIZE 512 #ifdef CONFIG_TCC_ASM typedef struct ExprValue { uint32_t v; Sym *sym; } ExprValue; #define MAX_ASM_OPERANDS 30 typedef struct ASMOperand { int id; /* GCC 3 optionnal identifier (0 if number only supported */ char *constraint; char asm_str[16]; /* computed asm string for operand */ SValue *vt; /* C value of the expression */ int ref_index; /* if >= 0, gives reference to a output constraint */ int input_index; /* if >= 0, gives reference to an input constraint */ int priority; /* priority, used to assign registers */ int reg; /* if >= 0, register number used for this operand */ int is_llong; /* true if double register value */ int is_memory; /* true if memory operand */ int is_rw; /* for '+' modifier */ } ASMOperand; #endif struct TCCState { int output_type; BufferedFile **include_stack_ptr; int *ifdef_stack_ptr; /* include file handling */ char **include_paths; int nb_include_paths; char **sysinclude_paths; int nb_sysinclude_paths; CachedInclude **cached_includes; int nb_cached_includes; char **library_paths; int nb_library_paths; /* array of all loaded dlls (including those referenced by loaded dlls) */ DLLReference **loaded_dlls; int nb_loaded_dlls; /* sections */ Section **sections; int nb_sections; /* number of sections, including first dummy section */ Section **priv_sections; int nb_priv_sections; /* number of private sections */ /* got handling */ Section *got; Section *plt; unsigned long *got_offsets; int nb_got_offsets; /* give the correspondance from symtab indexes to dynsym indexes */ int *symtab_to_dynsym; /* temporary dynamic symbol sections (for dll loading) */ Section *dynsymtab_section; /* exported dynamic symbol section */ Section *dynsym; int nostdinc; /* if true, no standard headers are added */ int nostdlib; /* if true, no standard libraries are added */ int nocommon; /* if true, do not use common symbols for .bss data */ /* if true, static linking is performed */ int static_link; /* soname as specified on the command line (-soname) */ const char *soname; /* if true, all symbols are exported */ int rdynamic; /* if true, only link in referenced objects from archive */ int alacarte_link; /* address of text section */ unsigned long text_addr; int has_text_addr; /* output format, see TCC_OUTPUT_FORMAT_xxx */ int output_format; /* C language options */ int char_is_unsigned; int leading_underscore; /* warning switches */ int warn_write_strings; int warn_unsupported; int warn_error; int warn_none; int warn_implicit_function_declaration; /* display some information during compilation */ int verbose; /* compile with debug symbol (and use them if error during execution) */ int do_debug; /* compile with built-in memory and bounds checker */ int do_bounds_check; /* give the path of the tcc libraries */ const char *tcc_lib_path; /* error handling */ void *error_opaque; void (*error_func)(void *opaque, const char *msg); int error_set_jmp_enabled; jmp_buf error_jmp_buf; int nb_errors; /* tiny assembler state */ Sym *asm_labels; /* see include_stack_ptr */ BufferedFile *include_stack[INCLUDE_STACK_SIZE]; /* see ifdef_stack_ptr */ int ifdef_stack[IFDEF_STACK_SIZE]; /* see cached_includes */ int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE]; /* pack stack */ int pack_stack[PACK_STACK_SIZE]; int *pack_stack_ptr; /* output file for preprocessing */ FILE *outfile; /* for tcc_relocate */ int runtime_added; #ifdef TCC_TARGET_X86_64 /* write PLT and GOT here */ char *runtime_plt_and_got; unsigned int runtime_plt_and_got_offset; #endif }; /* The current value can be: */ #define VT_VALMASK 0x00ff #define VT_CONST 0x00f0 /* constant in vc (must be first non register value) */ #define VT_LLOCAL 0x00f1 /* lvalue, offset on stack */ #define VT_LOCAL 0x00f2 /* offset on stack */ #define VT_CMP 0x00f3 /* the value is stored in processor flags (in vc) */ #define VT_JMP 0x00f4 /* value is the consequence of jmp true (even) */ #define VT_JMPI 0x00f5 /* value is the consequence of jmp false (odd) */ #define VT_LVAL 0x0100 /* var is an lvalue */ #define VT_SYM 0x0200 /* a symbol value is added */ #define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for char/short stored in integer registers) */ #define VT_MUSTBOUND 0x0800 /* bound checking must be done before dereferencing value */ #define VT_BOUNDED 0x8000 /* value is bounded. The address of the bounding function call point is in vc */ #define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */ #define VT_LVAL_SHORT 0x2000 /* lvalue is a short */ #define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */ #define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED) /* types */ #define VT_INT 0 /* integer type */ #define VT_BYTE 1 /* signed byte type */ #define VT_SHORT 2 /* short type */ #define VT_VOID 3 /* void type */ #define VT_PTR 4 /* pointer */ #define VT_ENUM 5 /* enum definition */ #define VT_FUNC 6 /* function type */ #define VT_STRUCT 7 /* struct/union definition */ #define VT_FLOAT 8 /* IEEE float */ #define VT_DOUBLE 9 /* IEEE double */ #define VT_LDOUBLE 10 /* IEEE long double */ #define VT_BOOL 11 /* ISOC99 boolean type */ #define VT_LLONG 12 /* 64 bit integer */ #define VT_LONG 13 /* long integer (NEVER USED as type, only during parsing) */ #define VT_BTYPE 0x000f /* mask for basic type */ #define VT_UNSIGNED 0x0010 /* unsigned type */ #define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */ #define VT_BITFIELD 0x0040 /* bitfield modifier */ #define VT_CONSTANT 0x0800 /* const modifier */ #define VT_VOLATILE 0x1000 /* volatile modifier */ #define VT_SIGNED 0x2000 /* signed type */ /* storage */ #define VT_EXTERN 0x00000080 /* extern definition */ #define VT_STATIC 0x00000100 /* static variable */ #define VT_TYPEDEF 0x00000200 /* typedef definition */ #define VT_INLINE 0x00000400 /* inline definition */ #define VT_STRUCT_SHIFT 16 /* shift for bitfield shift values */ /* type mask (except storage) */ #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE) #define VT_TYPE (~(VT_STORAGE)) /* token values */ /* warning: the following compare tokens depend on i386 asm code */ #define TOK_ULT 0x92 #define TOK_UGE 0x93 #define TOK_EQ 0x94 #define TOK_NE 0x95 #define TOK_ULE 0x96 #define TOK_UGT 0x97 #define TOK_Nset 0x98 #define TOK_Nclear 0x99 #define TOK_LT 0x9c #define TOK_GE 0x9d #define TOK_LE 0x9e #define TOK_GT 0x9f #define TOK_LAND 0xa0 #define TOK_LOR 0xa1 #define TOK_DEC 0xa2 #define TOK_MID 0xa3 /* inc/dec, to void constant */ #define TOK_INC 0xa4 #define TOK_UDIV 0xb0 /* unsigned division */ #define TOK_UMOD 0xb1 /* unsigned modulo */ #define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */ #define TOK_CINT 0xb3 /* number in tokc */ #define TOK_CCHAR 0xb4 /* char constant in tokc */ #define TOK_STR 0xb5 /* pointer to string in tokc */ #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */ #define TOK_LCHAR 0xb7 #define TOK_LSTR 0xb8 #define TOK_CFLOAT 0xb9 /* float constant */ #define TOK_LINENUM 0xba /* line number info */ #define TOK_CDOUBLE 0xc0 /* double constant */ #define TOK_CLDOUBLE 0xc1 /* long double constant */ #define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */ #define TOK_ADDC1 0xc3 /* add with carry generation */ #define TOK_ADDC2 0xc4 /* add with carry use */ #define TOK_SUBC1 0xc5 /* add with carry generation */ #define TOK_SUBC2 0xc6 /* add with carry use */ #define TOK_CUINT 0xc8 /* unsigned int constant */ #define TOK_CLLONG 0xc9 /* long long constant */ #define TOK_CULLONG 0xca /* unsigned long long constant */ #define TOK_ARROW 0xcb #define TOK_DOTS 0xcc /* three dots */ #define TOK_SHR 0xcd /* unsigned shift right */ #define TOK_PPNUM 0xce /* preprocessor number */ #define TOK_SHL 0x01 /* shift left */ #define TOK_SAR 0x02 /* signed shift right */ /* assignement operators : normal operator or 0x80 */ #define TOK_A_MOD 0xa5 #define TOK_A_AND 0xa6 #define TOK_A_MUL 0xaa #define TOK_A_ADD 0xab #define TOK_A_SUB 0xad #define TOK_A_DIV 0xaf #define TOK_A_XOR 0xde #define TOK_A_OR 0xfc #define TOK_A_SHL 0x81 #define TOK_A_SAR 0x82 #ifndef offsetof #define offsetof(type, field) ((size_t) &((type *)0)->field) #endif #ifndef countof #define countof(tab) (sizeof(tab) / sizeof((tab)[0])) #endif #define TOK_EOF (-1) /* end of file */ #define TOK_LINEFEED 10 /* line feed */ /* all identificators and strings have token above that */ #define TOK_IDENT 256 /* only used for i386 asm opcodes definitions */ #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x) #define DEF_BWL(x) \ DEF(TOK_ASM_ ## x ## b, #x "b") \ DEF(TOK_ASM_ ## x ## w, #x "w") \ DEF(TOK_ASM_ ## x ## l, #x "l") \ DEF(TOK_ASM_ ## x, #x) #define DEF_WL(x) \ DEF(TOK_ASM_ ## x ## w, #x "w") \ DEF(TOK_ASM_ ## x ## l, #x "l") \ DEF(TOK_ASM_ ## x, #x) #define DEF_FP1(x) \ DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \ DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \ DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \ DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s") #define DEF_FP(x) \ DEF(TOK_ASM_ ## f ## x, "f" #x ) \ DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \ DEF_FP1(x) #define DEF_ASMTEST(x) \ DEF_ASM(x ## o) \ DEF_ASM(x ## no) \ DEF_ASM(x ## b) \ DEF_ASM(x ## c) \ DEF_ASM(x ## nae) \ DEF_ASM(x ## nb) \ DEF_ASM(x ## nc) \ DEF_ASM(x ## ae) \ DEF_ASM(x ## e) \ DEF_ASM(x ## z) \ DEF_ASM(x ## ne) \ DEF_ASM(x ## nz) \ DEF_ASM(x ## be) \ DEF_ASM(x ## na) \ DEF_ASM(x ## nbe) \ DEF_ASM(x ## a) \ DEF_ASM(x ## s) \ DEF_ASM(x ## ns) \ DEF_ASM(x ## p) \ DEF_ASM(x ## pe) \ DEF_ASM(x ## np) \ DEF_ASM(x ## po) \ DEF_ASM(x ## l) \ DEF_ASM(x ## nge) \ DEF_ASM(x ## nl) \ DEF_ASM(x ## ge) \ DEF_ASM(x ## le) \ DEF_ASM(x ## ng) \ DEF_ASM(x ## nle) \ DEF_ASM(x ## g) #define TOK_ASM_int TOK_INT enum tcc_token { TOK_LAST = TOK_IDENT - 1, #define DEF(id, str) id, #include "tcctok.h" #undef DEF }; #define TOK_UIDENT TOK_DEFINE #ifdef _WIN32 #define snprintf _snprintf #define vsnprintf _vsnprintf #ifndef __GNUC__ #define strtold (long double)strtod #define strtof (float)strtod #define strtoll (long long)strtol #endif #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \ || defined(__OpenBSD__) /* currently incorrect */ long double strtold(const char *nptr, char **endptr) { return (long double)strtod(nptr, endptr); } float strtof(const char *nptr, char **endptr) { return (float)strtod(nptr, endptr); } #else /* XXX: need to define this to use them in non ISOC99 context */ extern float strtof (const char *__nptr, char **__endptr); extern long double strtold (const char *__nptr, char **__endptr); #endif #ifdef _WIN32 #define IS_PATHSEP(c) (c == '/' || c == '\\') #define IS_ABSPATH(p) (IS_PATHSEP(p[0]) || (p[0] && p[1] == ':' && IS_PATHSEP(p[2]))) #define PATHCMP stricmp #else #define IS_PATHSEP(c) (c == '/') #define IS_ABSPATH(p) IS_PATHSEP(p[0]) #define PATHCMP strcmp #endif void error(const char *fmt, ...); void error_noabort(const char *fmt, ...); void warning(const char *fmt, ...); void tcc_set_lib_path_w32(TCCState *s); int tcc_set_flag(TCCState *s, const char *flag_name, int value); void tcc_print_stats(TCCState *s, int64_t total_time); void tcc_free(void *ptr); void *tcc_malloc(unsigned long size); void *tcc_mallocz(unsigned long size); void *tcc_realloc(void *ptr, unsigned long size); char *tcc_strdup(const char *str); char *tcc_basename(const char *name); char *tcc_fileextension (const char *name); char *pstrcpy(char *buf, int buf_size, const char *s); char *pstrcat(char *buf, int buf_size, const char *s); void dynarray_add(void ***ptab, int *nb_ptr, void *data); void dynarray_reset(void *pp, int *n); #ifdef CONFIG_TCC_BACKTRACE extern int num_callers; extern const char **rt_bound_error_msg; #endif /* true if float/double/long double type */ static inline int is_float(int t) { int bt; bt = t & VT_BTYPE; return bt == VT_LDOUBLE || bt == VT_DOUBLE || bt == VT_FLOAT; } /* space exlcuding newline */ static inline int is_space(int ch) { return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r'; }


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