Ruby  2.0.0p353(2013-11-22revision43784)
Data Structures | Macros | Typedefs | Functions | Variables
util.c File Reference
#include "ruby/ruby.h"
#include "internal.h"
#include <ctype.h>
#include <stdio.h>
#include <errno.h>
#include <math.h>
#include <float.h>
#include "ruby/util.h"
#include <sys/types.h>
#include <sys/stat.h>
#include "stdlib.h"
#include "string.h"
Include dependency graph for util.c:

Go to the source code of this file.

Data Structures

struct  stack_node
 
union  U
 
struct  Bigint
 

Macros

#define S_ISDIR(m)   (((m) & S_IFMT) == S_IFDIR)
 
#define mmtype   long
 
#define mmcount   (16 / SIZEOF_LONG)
 
#define A   ((mmtype*)a)
 
#define B   ((mmtype*)b)
 
#define C   ((mmtype*)c)
 
#define D   ((mmtype*)d)
 
#define mmstep   (sizeof(mmtype) * mmcount)
 
#define mmprepare(base, size)
 
#define mmarg   mmkind, size, high, low
 
#define mmargdecl   int mmkind, size_t size, size_t high, size_t low
 
#define mmswap(a, b)   mmswap_((a),(b),mmarg)
 
#define mmrot3(a, b, c)   mmrot3_((a),(b),(c),mmarg)
 
#define PUSH(ll, rr)   do { top->LL = (ll); top->RR = (rr); ++top; } while (0) /* Push L,l,R,r */
 
#define POP(ll, rr)   do { --top; (ll) = top->LL; (rr) = top->RR; } while (0) /* Pop L,l,R,r */
 
#define med3(a, b, c)
 
#define PATH_MAX   8192
 
#define IEEE_LITTLE_ENDIAN
 
#define MALLOC   malloc
 
#define FREE   free
 
#define PRIVATE_MEM   2304
 
#define PRIVATE_mem   ((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
 
#define IEEE_Arith
 
#define word0(x)   ((x).L[1])
 
#define word1(x)   ((x).L[0])
 
#define dval(x)   ((x).d)
 
#define Storeinc(a, b, c)
 
#define Exp_shift   20
 
#define Exp_shift1   20
 
#define Exp_msk1   0x100000
 
#define Exp_msk11   0x100000
 
#define Exp_mask   0x7ff00000
 
#define P   53
 
#define Bias   1023
 
#define Emin   (-1022)
 
#define Exp_1   0x3ff00000
 
#define Exp_11   0x3ff00000
 
#define Ebits   11
 
#define Frac_mask   0xfffff
 
#define Frac_mask1   0xfffff
 
#define Ten_pmax   22
 
#define Bletch   0x10
 
#define Bndry_mask   0xfffff
 
#define Bndry_mask1   0xfffff
 
#define LSB   1
 
#define Sign_bit   0x80000000
 
#define Log2P   1
 
#define Tiny0   0
 
#define Tiny1   1
 
#define Quick_max   14
 
#define Int_max   14
 
#define Avoid_Underflow
 
#define Flt_Rounds   1
 
#define Rounding   Flt_Rounds
 
#define rounded_product(a, b)   ((a) *= (b))
 
#define rounded_quotient(a, b)   ((a) /= (b))
 
#define Big0   (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))
 
#define Big1   0xffffffff
 
#define Pack_32
 
#define FFFFFFFF   0xffffffffUL
 
#define Llong   long long
 
#define ULLong   unsigned Llong
 
#define MULTIPLE_THREADS   1
 
#define ACQUIRE_DTOA_LOCK(n)   /*unused right now*/
 
#define FREE_DTOA_LOCK(n)   /*unused right now*/
 
#define Kmax   15
 
#define Bcopy(x, y)
 
#define d0   word0(d)
 
#define d1   word1(d)
 
#define d0   word0(d)
 
#define d1   word1(d)
 
#define Scale_Bit   0x10
 
#define n_bigtens   5
 
#define rv_alloc(i)   xmalloc(i)
 
#define rv_strdup(s, rve)   nrv_alloc((s), (rve), strlen(s)+1)
 
#define DBL_MANH_SIZE   20
 
#define DBL_MANL_SIZE   32
 
#define DBL_ADJ   (DBL_MAX_EXP - 2)
 
#define SIGFIGS   ((DBL_MANT_DIG + 3) / 4 + 1)
 
#define dexp_get(u)   ((int)(word0(u) >> Exp_shift) & ~Exp_msk1)
 
#define dexp_set(u, v)   (word0(u) = (((int)(word0(u)) & ~Exp_mask) | ((v) << Exp_shift)))
 
#define dmanh_get(u)   ((uint32_t)(word0(u) & Frac_mask))
 
#define dmanl_get(u)   ((uint32_t)word1(u))
 

Typedefs

typedef int( cmpfunc_t )(const void *, const void *, void *)
 
typedef U double_u
 
typedef struct Bigint Bigint
 

Functions

unsigned long ruby_scan_oct (const char *start, size_t len, size_t *retlen)
 
unsigned long ruby_scan_hex (const char *start, size_t len, size_t *retlen)
 
static unsigned long scan_digits (const char *str, int base, size_t *retlen, int *overflow)
 
unsigned long ruby_strtoul (const char *str, char **endptr, int base)
 
static void mmswap_ (register char *a, register char *b, mmargdecl)
 
static void mmrot3_ (register char *a, register char *b, register char *c, mmargdecl)
 
void ruby_qsort (void *base, const size_t nel, const size_t size, cmpfunc_t *cmp, void *d)
 
char * ruby_strdup (const char *str)
 
char * ruby_getcwd (void)
 
static Bigint * Balloc (int k)
 
static void Bfree (Bigint *v)
 
static Bigint * multadd (Bigint *b, int m, int a)
 
static Bigint * s2b (const char *s, int nd0, int nd, ULong y9)
 
static int hi0bits (register ULong x)
 
static int lo0bits (ULong *y)
 
static Bigint * i2b (int i)
 
static Bigint * mult (Bigint *a, Bigint *b)
 
static Bigint * pow5mult (Bigint *b, int k)
 
static Bigint * lshift (Bigint *b, int k)
 
static int cmp (Bigint *a, Bigint *b)
 
static Bigint * diff (Bigint *a, Bigint *b)
 
static double ulp (double x_)
 
static double b2d (Bigint *a, int *e)
 
static Bigint * d2b (double d_, int *e, int *bits)
 
static double ratio (Bigint *a, Bigint *b)
 
double ruby_strtod (const char *s00, char **se)
 
static int quorem (Bigint *b, Bigint *S)
 
static char * nrv_alloc (const char *s, char **rve, size_t n)
 
char * ruby_dtoa (double d_, int mode, int ndigits, int *decpt, int *sign, char **rve)
 
void ruby_each_words (const char *str, void(*func)(const char *, int, void *), void *arg)
 
char * ruby_hdtoa (double d, const char *xdigs, int ndigits, int *decpt, int *sign, char **rve)
 

Variables

static double private_mem [PRIVATE_mem]
 
static double * pmem_next = private_mem
 
static Bigint * freelist [Kmax+1]
 
static Bigint * p5s
 
static const double tens []
 
static const double bigtens [] = { 1e16, 1e32, 1e64, 1e128, 1e256 }
 
static const double tinytens []
 
static const char INFSTR [] = "Infinity"
 
static const char NANSTR [] = "NaN"
 
static const char ZEROSTR [] = "0"
 

Macro Definition Documentation

#define A   ((mmtype*)a)

Definition at line 192 of file util.c.

Referenced by mmrot3_(), and mmswap_().

#define ACQUIRE_DTOA_LOCK (   n)    /*unused right now*/

Definition at line 987 of file util.c.

Referenced by Balloc(), Bfree(), and pow5mult().

#define Avoid_Underflow

Definition at line 857 of file util.c.

Referenced by ruby_strtod().

#define B   ((mmtype*)b)

Definition at line 193 of file util.c.

Referenced by mmrot3_(), and mmswap_().

#define Bcopy (   x,
  y 
)
Value:
memcpy((char *)&(x)->sign, (char *)&(y)->sign, \
(y)->wds*sizeof(Long) + 2*sizeof(int))
memcpy
memcpy(buf+1, str, len)

Definition at line 1053 of file util.c.

Referenced by multadd(), ruby_dtoa(), and ruby_strtod().

#define Bias   1023

Definition at line 838 of file util.c.

Referenced by d2b(), ruby_dtoa(), and ruby_strtod().

#define Big0   (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))

Definition at line 953 of file util.c.

Referenced by ruby_strtod().

#define Big1   0xffffffff

Definition at line 954 of file util.c.

Referenced by ruby_strtod().

#define Bletch   0x10

Definition at line 846 of file util.c.

Referenced by ruby_dtoa().

#define Bndry_mask   0xfffff

Definition at line 847 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

#define Bndry_mask1   0xfffff

Definition at line 848 of file util.c.

Referenced by ruby_strtod().

#define C   ((mmtype*)c)

Definition at line 194 of file util.c.

Referenced by get_event_id(), mmrot3_(), and symbol2event_flag().

#define D   ((mmtype*)d)

Definition at line 195 of file util.c.

#define d0   word0(d)

Referenced by b2d(), d2b(), math_acos(), math_acosh(), math_asin(), math_atanh(), math_gamma(), math_lgamma(), math_log(), math_log10(), math_log2(), and math_sqrt().

#define d0   word0(d)
#define d1   word1(d)

Referenced by b2d(), d2b(), and inet_pton().

#define d1   word1(d)
#define DBL_ADJ   (DBL_MAX_EXP - 2)

Definition at line 3808 of file util.c.

Referenced by ruby_hdtoa().

#define DBL_MANH_SIZE   20

Definition at line 3806 of file util.c.

Referenced by ruby_hdtoa().

#define DBL_MANL_SIZE   32

Definition at line 3807 of file util.c.

Referenced by ruby_hdtoa().

#define dexp_get (   u)    ((int)(word0(u) >> Exp_shift) & ~Exp_msk1)

Definition at line 3810 of file util.c.

Referenced by ruby_hdtoa().

#define dexp_set (   u,
  v 
)    (word0(u) = (((int)(word0(u)) & ~Exp_mask) | ((v) << Exp_shift)))

Definition at line 3811 of file util.c.

Referenced by ruby_hdtoa().

#define dmanh_get (   u)    ((uint32_t)(word0(u) & Frac_mask))

Definition at line 3812 of file util.c.

Referenced by ruby_hdtoa().

#define dmanl_get (   u)    ((uint32_t)word1(u))

Definition at line 3813 of file util.c.

Referenced by ruby_hdtoa().

#define dval (   x)    ((x).d)

Definition at line 810 of file util.c.

Referenced by b2d(), d2b(), ratio(), ruby_dtoa(), ruby_strtod(), and ulp().

#define Ebits   11

Definition at line 842 of file util.c.

Referenced by b2d().

#define Emin   (-1022)

Definition at line 839 of file util.c.

Referenced by ruby_strtod().

#define Exp_1   0x3ff00000

Definition at line 840 of file util.c.

Referenced by b2d(), ruby_dtoa(), and ruby_strtod().

#define Exp_11   0x3ff00000

Definition at line 841 of file util.c.

Referenced by ruby_dtoa().

#define Exp_mask   0x7ff00000

Definition at line 836 of file util.c.

Referenced by ruby_dtoa(), ruby_strtod(), and ulp().

#define Exp_msk1   0x100000

Definition at line 834 of file util.c.

Referenced by d2b(), ratio(), ruby_dtoa(), ruby_strtod(), and ulp().

#define Exp_msk11   0x100000

Definition at line 835 of file util.c.

Referenced by d2b().

#define Exp_shift   20

Definition at line 832 of file util.c.

Referenced by d2b(), ruby_dtoa(), ruby_strtod(), and ulp().

#define Exp_shift1   20

Definition at line 833 of file util.c.

Referenced by ruby_dtoa().

#define FFFFFFFF   0xffffffffUL

Definition at line 960 of file util.c.

Referenced by diff(), mult(), multadd(), and quorem().

#define Flt_Rounds   1

Definition at line 867 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

#define Frac_mask   0xfffff

Definition at line 843 of file util.c.

Referenced by d2b(), ruby_dtoa(), and ruby_strtod().

#define Frac_mask1   0xfffff

Definition at line 844 of file util.c.

Referenced by ruby_dtoa().

#define FREE   free

Definition at line 721 of file util.c.

Referenced by Bfree().

#define FREE_DTOA_LOCK (   n)    /*unused right now*/

Definition at line 988 of file util.c.

Referenced by Balloc(), Bfree(), and pow5mult().

#define IEEE_Arith

Definition at line 738 of file util.c.

Referenced by ruby_strtod().

#define IEEE_LITTLE_ENDIAN

Definition at line 672 of file util.c.

#define Int_max   14

Definition at line 855 of file util.c.

Referenced by ruby_dtoa().

#define Kmax   15

Definition at line 991 of file util.c.

Referenced by Balloc(), and Bfree().

#define Llong   long long

Definition at line 974 of file util.c.

#define Log2P   1

Definition at line 851 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

#define LSB   1

Definition at line 849 of file util.c.

Referenced by ruby_strtod().

#define MALLOC   malloc

Definition at line 716 of file util.c.

Referenced by Balloc().

#define med3 (   a,
  b,
  c 
)
Value:
((*cmp)((a),(b),d)<0 ? \
((*cmp)((b),(c),d)<0 ? (b) : ((*cmp)((a),(c),d)<0 ? (c) : (a))) : \
((*cmp)((b),(c),d)>0 ? (b) : ((*cmp)((a),(c),d)<0 ? (a) : (c))))
a
Real * a
Definition: bigdecimal.c:1182
d
d
Definition: strlcat.c:58
cmp
static int cmp(Bigint *a, Bigint *b)
Definition: util.c:1434
b
Real * b
Definition: bigdecimal.c:1182
c
VpDivd * c
Definition: bigdecimal.c:1205

Definition at line 299 of file util.c.

Referenced by ruby_qsort().

#define mmarg   mmkind, size, high, low

Definition at line 207 of file util.c.

#define mmargdecl   int mmkind, size_t size, size_t high, size_t low

Definition at line 208 of file util.c.

#define mmcount   (16 / SIZEOF_LONG)

Definition at line 191 of file util.c.

#define mmprepare (   base,
  size 
)
Value:
do {\
if (((VALUE)(base) % sizeof(mmtype)) == 0 && ((size) % sizeof(mmtype)) == 0) \
if ((size) >= mmstep) mmkind = 1;\
else mmkind = 0;\
else mmkind = -1;\
high = ((size) / mmstep) * mmstep;\
low = ((size) % mmstep);\
} while (0)\
mmstep
#define mmstep
Definition: util.c:197
while
while(a->frac[0]/shift==0)
Definition: bigdecimal.c:5117
else
else
Definition: bigdecimal.c:1192
mmtype
#define mmtype
Definition: util.c:190
size
int size
Definition: encoding.c:52
if
if(RB_TYPE_P(r, T_FLOAT))
Definition: bigdecimal.c:1186
VALUE
unsigned long VALUE
Definition: ripper.y:104

Definition at line 198 of file util.c.

Referenced by ruby_qsort().

#define mmrot3 (   a,
  b,
  c 
)    mmrot3_((a),(b),(c),mmarg)

Definition at line 284 of file util.c.

Referenced by ruby_qsort().

#define mmstep   (sizeof(mmtype) * mmcount)

Definition at line 197 of file util.c.

Referenced by mmrot3_(), and mmswap_().

#define mmswap (   a,
  b 
)    mmswap_((a),(b),mmarg)

Definition at line 246 of file util.c.

Referenced by ruby_qsort().

#define mmtype   long

Definition at line 190 of file util.c.

Referenced by mmrot3_(), and mmswap_().

#define MULTIPLE_THREADS   1

Definition at line 981 of file util.c.

#define n_bigtens   5

Definition at line 1848 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

#define P   53

Definition at line 837 of file util.c.

Referenced by d2b(), ruby_dtoa(), ruby_strtod(), and ulp().

#define Pack_32

Definition at line 957 of file util.c.

#define PATH_MAX   8192

Referenced by ruby_getcwd().

#define POP (   ll,
  rr 
)    do { --top; (ll) = top->LL; (rr) = top->RR; } while (0) /* Pop L,l,R,r */

Definition at line 297 of file util.c.

Referenced by ruby_qsort().

#define PRIVATE_MEM   2304

Definition at line 726 of file util.c.

#define PRIVATE_mem   ((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))

Definition at line 728 of file util.c.

Referenced by Balloc().

#define PUSH (   ll,
  rr 
)    do { top->LL = (ll); top->RR = (rr); ++top; } while (0) /* Push L,l,R,r */

Definition at line 296 of file util.c.

Referenced by ruby_qsort().

#define Quick_max   14

Definition at line 854 of file util.c.

Referenced by ruby_dtoa().

#define rounded_product (   a,
  b 
)    ((a) *= (b))

Definition at line 949 of file util.c.

Referenced by ruby_strtod().

#define rounded_quotient (   a,
  b 
)    ((a) /= (b))

Definition at line 950 of file util.c.

Referenced by ruby_strtod().

#define Rounding   Flt_Rounds

Definition at line 876 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

#define rv_alloc (   i)    xmalloc(i)

Definition at line 3021 of file util.c.

Referenced by nrv_alloc(), ruby_dtoa(), and ruby_hdtoa().

#define rv_strdup (   s,
  rve 
)    nrv_alloc((s), (rve), strlen(s)+1)

Definition at line 3036 of file util.c.

Referenced by ruby_dtoa(), and ruby_hdtoa().

#define S_ISDIR (   m)    (((m) & S_IFMT) == S_IFDIR)

Definition at line 184 of file util.c.

#define Scale_Bit   0x10

Definition at line 1847 of file util.c.

Referenced by ruby_strtod().

#define SIGFIGS   ((DBL_MANT_DIG + 3) / 4 + 1)

Definition at line 3809 of file util.c.

Referenced by ruby_hdtoa().

#define Sign_bit   0x80000000

Definition at line 850 of file util.c.

Referenced by ruby_dtoa(), and ruby_hdtoa().

#define Storeinc (   a,
  b,
  c 
)
Value:
(((unsigned short *)(a))[1] = (unsigned short)(b), \
((unsigned short *)(a))[0] = (unsigned short)(c), (a)++)
a
Real * a
Definition: bigdecimal.c:1182
b
Real * b
Definition: bigdecimal.c:1182
c
VpDivd * c
Definition: bigdecimal.c:1205

Definition at line 818 of file util.c.

Referenced by diff(), mult(), and quorem().

#define Ten_pmax   22

Definition at line 845 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

#define Tiny0   0

Definition at line 852 of file util.c.

Referenced by ruby_strtod().

#define Tiny1   1

Definition at line 853 of file util.c.

Referenced by ruby_strtod().

#define ULLong   unsigned Llong

Definition at line 977 of file util.c.

Referenced by diff(), mult(), multadd(), and quorem().

#define word0 (   x)    ((x).L[1])

Definition at line 804 of file util.c.

Referenced by b2d(), d2b(), ratio(), ruby_dtoa(), ruby_hdtoa(), ruby_strtod(), and ulp().

#define word1 (   x)    ((x).L[0])

Definition at line 805 of file util.c.

Referenced by b2d(), d2b(), ruby_dtoa(), ruby_strtod(), and ulp().

Typedef Documentation

typedef struct Bigint Bigint

Definition at line 999 of file util.c.

typedef int( cmpfunc_t)(const void *, const void *, void *)

Definition at line 303 of file util.c.

typedef U double_u

Definition at line 802 of file util.c.

Function Documentation

static double b2d ( Bigint *  a,
int *  e 
)
static

Definition at line 1587 of file util.c.

References d, d0, d1, dval, Ebits, Exp_1, hi0bits(), Bigint::k, Bigint::wds, word0, word1, and Bigint::x.

Referenced by ratio().

static Bigint* Balloc ( int  k)
static

Definition at line 1004 of file util.c.

References ACQUIRE_DTOA_LOCK, FREE_DTOA_LOCK, Bigint::k, Kmax, len, MALLOC, Bigint::maxwds, Bigint::next, pmem_next, PRIVATE_mem, private_mem, Bigint::sign, Bigint::wds, and Bigint::x.

Referenced by d2b(), diff(), i2b(), lshift(), mult(), multadd(), ruby_dtoa(), ruby_strtod(), and s2b().

static void Bfree ( Bigint *  v)
static

Definition at line 1039 of file util.c.

References ACQUIRE_DTOA_LOCK, FREE, FREE_DTOA_LOCK, Bigint::k, Kmax, Bigint::next, and v.

Referenced by lshift(), multadd(), pow5mult(), ruby_dtoa(), and ruby_strtod().

static int cmp ( Bigint *  a,
Bigint *  b 
)
static

Definition at line 1434 of file util.c.

References i, Bigint::wds, and Bigint::x.

Referenced by diff(), quorem(), ruby_dtoa(), and ruby_strtod().

static Bigint* d2b ( double  d_,
int *  e,
int *  bits 
)
static

Definition at line 1652 of file util.c.

References b, Balloc(), Bias, d, d0, d1, dval, Exp_msk1, Exp_msk11, Exp_shift, Frac_mask, hi0bits(), i, int, Bigint::k, lo0bits(), P, Bigint::wds, word0, word1, and Bigint::x.

Referenced by ruby_dtoa(), and ruby_strtod().

static Bigint* diff ( Bigint *  a,
Bigint *  b 
)
static

Definition at line 1463 of file util.c.

References a, b, Balloc(), c, cmp(), FFFFFFFF, i, Bigint::k, Bigint::sign, Storeinc, ULLong, Bigint::wds, and Bigint::x.

Referenced by num_interval_step_size(), num_step(), pair_byte_cmp(), rb_dlptr_cmp(), rb_fiddle_ptr_cmp(), ruby_dtoa(), and ruby_strtod().

static int hi0bits ( register ULong  x)
static

Definition at line 1142 of file util.c.

References Bigint::k.

Referenced by b2d(), d2b(), and ruby_dtoa().

static Bigint* i2b ( int  i)
static

Definition at line 1214 of file util.c.

References b, Balloc(), i, Bigint::wds, and Bigint::x.

Referenced by pow5mult(), ruby_dtoa(), and ruby_strtod().

static int lo0bits ( ULong *  y)
static

Definition at line 1171 of file util.c.

References Bigint::k, and Bigint::x.

Referenced by d2b().

static Bigint* lshift ( Bigint *  b,
int  k 
)
static

Definition at line 1380 of file util.c.

References Balloc(), Bfree(), i, Bigint::k, Bigint::maxwds, n, Bigint::wds, and Bigint::x.

Referenced by ruby_dtoa(), and ruby_strtod().

static void mmrot3_ ( register char *  a,
register char *  b,
register char *  c,
mmargdecl   
)
static

Definition at line 249 of file util.c.

References A, a, B, b, C, c, mmstep, mmtype, s, size, and t.

static void mmswap_ ( register char *  a,
register char *  b,
mmargdecl   
)
static

Definition at line 210 of file util.c.

References A, a, B, b, mmstep, mmtype, s, size, and t.

static Bigint* mult ( Bigint *  a,
Bigint *  b 
)
static

Definition at line 1225 of file util.c.

References a, b, Balloc(), c, FFFFFFFF, Bigint::k, Bigint::maxwds, Storeinc, ULLong, Bigint::wds, and Bigint::x.

Referenced by iseq_specialized_instruction(), pow5mult(), ruby_dtoa(), and ruby_strtod().

static Bigint* multadd ( Bigint *  b,
int  m,
int  a 
)
static

Definition at line 1057 of file util.c.

References a, b, Balloc(), Bcopy, Bfree(), FFFFFFFF, i, Bigint::k, Bigint::maxwds, ULLong, Bigint::wds, and Bigint::x.

Referenced by pow5mult(), ruby_dtoa(), and s2b().

static char* nrv_alloc ( const char *  s,
char **  rve,
size_t  n 
)
static

Definition at line 3025 of file util.c.

References rv_alloc, and t.

static Bigint* pow5mult ( Bigint *  b,
int  k 
)
static

Definition at line 1328 of file util.c.

References ACQUIRE_DTOA_LOCK, b, Bfree(), FREE_DTOA_LOCK, i, i2b(), mult(), multadd(), and Bigint::next.

Referenced by ruby_dtoa(), and ruby_strtod().

static int quorem ( Bigint *  b,
Bigint *  S 
)
static

Definition at line 2900 of file util.c.

References cmp(), FFFFFFFF, n, q, Storeinc, ULLong, Bigint::wds, and Bigint::x.

Referenced by ruby_dtoa().

static double ratio ( Bigint *  a,
Bigint *  b 
)
static

Definition at line 1789 of file util.c.

References b2d(), dval, Exp_msk1, Bigint::k, Bigint::wds, and word0.

Referenced by ruby_strtod().

char* ruby_dtoa ( double  d_,
int  mode,
int  ndigits,
int *  decpt,
int *  sign,
char **  rve 
)

Definition at line 3091 of file util.c.

References b, Balloc(), Bcopy, Bfree(), Bias, bigtens, Bletch, Bndry_mask, cmp(), d, d2b(), diff(), dval, Exp_1, Exp_11, Exp_mask, Exp_msk1, Exp_shift, Exp_shift1, Flt_Rounds, Frac_mask, Frac_mask1, hi0bits(), i, i2b(), int, Int_max, Bigint::k, Log2P, lshift(), mult(), multadd(), n_bigtens, no_digits, P, pow5mult(), Quick_max, quorem(), ret, Rounding, rv_alloc, rv_strdup, s, S, Bigint::sign, Sign_bit, Ten_pmax, tens, Bigint::wds, word0, word1, and Bigint::x.

Referenced by flo_to_s(), and w_float().

void ruby_each_words ( const char *  str,
void(*)(const char *, int, void *)  func,
void *  arg 
)

Definition at line 3764 of file util.c.

References arg, end, int, ISSPACE, len, and str.

Referenced by proc_options(), and ruby_set_debug_option().

char* ruby_getcwd ( void  )

Definition at line 475 of file util.c.

References buf, errno, PATH_MAX, rb_sys_fail(), size, xfree, xmalloc, and xrealloc.

char* ruby_hdtoa ( double  d,
const char *  xdigs,
int  ndigits,
int *  decpt,
int *  sign,
char **  rve 
)

Definition at line 3841 of file util.c.

References bufsize, d, U::d, DBL_ADJ, DBL_MANH_SIZE, DBL_MANL_SIZE, DBL_MANT_DIG, DBL_MAX_EXP, dexp_get, dexp_set, dmanh_get, dmanl_get, isinf(), isnan, NULL, rv_alloc, rv_strdup, s, SIGFIGS, Sign_bit, and word0.

void ruby_qsort ( void *  base,
const size_t  nel,
const size_t  size,
cmpfunc_t *  cmp,
void *  d 
)

Definition at line 305 of file util.c.

References fail, m, med3, mmprepare, mmrot3, mmswap, n, p, POP, PUSH, R, r, size, t, and top.

unsigned long ruby_scan_hex ( const char *  start,
size_t  len,
size_t *  retlen 
)

Definition at line 42 of file util.c.

References int, retval, s, strchr(), and tmp.

Referenced by unescape_unicode_bmp(), and unescape_unicode_list().

unsigned long ruby_scan_oct ( const char *  start,
size_t  len,
size_t *  retlen 
)

Definition at line 28 of file util.c.

References int, retval, and s.

Referenced by parser_tokadd_escape(), and unescape_nonascii().

char* ruby_strdup ( const char *  str)

Definition at line 454 of file util.c.

References len, memcpy(), strlen(), tmp, and xmalloc.

Referenced by argf_initialize_copy(), compat_init_setproctitle(), features_index_add_single(), load_lock(), register_init_ext(), ruby_setenv(), and yycompile().

double ruby_strtod ( const char *  s00,
char **  se 
)

Definition at line 1942 of file util.c.

References Avoid_Underflow, Balloc(), Bcopy, Bfree(), Bias, Big0, Big1, bigtens, Bndry_mask, Bndry_mask1, c, cmp(), d2b(), DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP, diff(), dval, e, Emin, errno, Exp_1, Exp_mask, Exp_msk1, Exp_shift, FLT_RADIX, Flt_Rounds, Frac_mask, i, i2b(), IEEE_Arith, int, ISDIGIT, Bigint::k, Log2P, LSB, lshift(), match(), mult(), n_bigtens, nf, NULL, P, pow5mult(), ratio(), ret, rounded_product, rounded_quotient, Rounding, s, s2b(), Scale_Bit, Bigint::sign, strchr(), Ten_pmax, tens, Tiny0, Tiny1, tinytens, ulp(), Bigint::wds, word0, word1, and Bigint::x.

unsigned long ruby_strtoul ( const char *  str,
char **  endptr,
int  base 
)

Definition at line 106 of file util.c.

References b, c, errno, ISSPACE, len, ret, scan_digits(), and str.

static Bigint* s2b ( const char *  s,
int  nd0,
int  nd,
ULong  y9 
)
static

Definition at line 1108 of file util.c.

References b, Balloc(), i, Bigint::k, multadd(), Bigint::wds, and Bigint::x.

Referenced by ruby_strtod().

static unsigned long scan_digits ( const char *  str,
int  base,
size_t *  retlen,
int *  overflow 
)
static

Definition at line 59 of file util.c.

References c, d, ret, str, and table.

Referenced by ruby_strtoul().

static double ulp ( double  x_)
static

Definition at line 1549 of file util.c.

References a, dval, Exp_mask, Exp_msk1, Exp_shift, P, word0, word1, and Bigint::x.

Referenced by ruby_strtod().

Variable Documentation

const double bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 }
static

Definition at line 1836 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

Bigint* freelist[Kmax+1]
static

Definition at line 1001 of file util.c.

const char INFSTR[] = "Infinity"
static

Definition at line 3052 of file util.c.

const char NANSTR[] = "NaN"
static

Definition at line 3053 of file util.c.

Bigint* p5s
static

Definition at line 1325 of file util.c.

double * pmem_next = private_mem
static

Definition at line 729 of file util.c.

Referenced by Balloc().

double private_mem[PRIVATE_mem]
static

Definition at line 729 of file util.c.

Referenced by Balloc().

const double tens[]
static
Initial value:
= {
1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
1e20, 1e21, 1e22
}

Definition at line 1825 of file util.c.

Referenced by ruby_dtoa(), and ruby_strtod().

const double tinytens[]
static
Initial value:
= { 1e-16, 1e-32, 1e-64, 1e-128,
9007199254740992.*9007199254740992.e-256
}
e
BDIGIT e
Definition: bigdecimal.c:5085

Definition at line 1837 of file util.c.

Referenced by ruby_strtod().

const char ZEROSTR[] = "0"
static

Definition at line 3054 of file util.c.

Generated on Tue Nov 26 2013 21:44:13 for Ruby by   doxygen 1.8.5