diff options
Diffstat (limited to 'system/lib')
93 files changed, 16598 insertions, 9983 deletions
diff --git a/system/lib/libc.symbols b/system/lib/libc.symbols index 561f01c1..04fb40d6 100644 --- a/system/lib/libc.symbols +++ b/system/lib/libc.symbols @@ -1,9 +1,15 @@ + T _ZNKSt16bad_array_length4whatEv T _ZNKSt20bad_array_new_length4whatEv T _ZNKSt9bad_alloc4whatEv + T _ZNSt16bad_array_lengthC1Ev + T _ZNSt16bad_array_lengthC2Ev + T _ZNSt16bad_array_lengthD0Ev + T _ZNSt16bad_array_lengthD1Ev + T _ZNSt16bad_array_lengthD2Ev T _ZNSt20bad_array_new_lengthC1Ev T _ZNSt20bad_array_new_lengthC2Ev T _ZNSt20bad_array_new_lengthD0Ev - ? _ZNSt20bad_array_new_lengthD1Ev + T _ZNSt20bad_array_new_lengthD1Ev T _ZNSt20bad_array_new_lengthD2Ev T _ZNSt9bad_allocC1Ev T _ZNSt9bad_allocC2Ev @@ -14,10 +20,15 @@ T _ZSt15set_new_handlerPFvvE T _ZSt17__throw_bad_allocv D _ZSt7nothrow + D _ZTISt16bad_array_length D _ZTISt20bad_array_new_length D _ZTISt9bad_alloc + C _ZTISt9exception + D _ZTSSt16bad_array_length D _ZTSSt20bad_array_new_length D _ZTSSt9bad_alloc + C _ZTSSt9exception + D _ZTVSt16bad_array_length D _ZTVSt20bad_array_new_length D _ZTVSt9bad_alloc W _ZdaPv @@ -28,6 +39,17 @@ W _ZnajRKSt9nothrow_t W _Znwj W _ZnwjRKSt9nothrow_t + T __floatscan + T __overflow + T __seek_on_exit + T __shgetc + T __shlim + W __strtod_l + W __strtof_l + W __strtold_l + T __toread + W __towrite_used + T __uflow T _err T _errx T _verr @@ -67,11 +89,14 @@ W pvalloc W realloc W realloc_in_place + T scalbn + T scalbnl T strtod - T strtod_l + W strtod_l T strtof + W strtof_l T strtold - T strtold_l + W strtold_l W valloc W verr W verrx diff --git a/system/lib/libc/musl/src/internal/floatscan.c b/system/lib/libc/musl/src/internal/floatscan.c new file mode 100644 index 00000000..f6e331d4 --- /dev/null +++ b/system/lib/libc/musl/src/internal/floatscan.c @@ -0,0 +1,496 @@ +#include <stdint.h> +#include <stdio.h> +#include <math.h> +#include <float.h> +#include <limits.h> +#include <errno.h> +#include <ctype.h> + +#include "shgetc.h" +#include "floatscan.h" + +#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 + +#define LD_B1B_DIG 2 +#define LD_B1B_MAX 9007199, 254740991 +#define KMAX 128 + +#else /* LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384 */ + +#define LD_B1B_DIG 3 +#define LD_B1B_MAX 18, 446744073, 709551615 +#define KMAX 2048 + +#endif + +#define MASK (KMAX-1) + +#define CONCAT2(x,y) x ## y +#define CONCAT(x,y) CONCAT2(x,y) + +static long long scanexp(FILE *f, int pok) +{ + int c; + int x; + long long y; + int neg = 0; + + c = shgetc(f); + if (c=='+' || c=='-') { + neg = (c=='-'); + c = shgetc(f); + if (c-'0'>=10U && pok) shunget(f); + } + if (c-'0'>=10U) { + shunget(f); + return LLONG_MIN; + } + for (x=0; c-'0'<10U && x<INT_MAX/10; c = shgetc(f)) + x = 10*x + c-'0'; + for (y=x; c-'0'<10U && y<LLONG_MAX/100; c = shgetc(f)) + y = 10*y + c-'0'; + for (; c-'0'<10U; c = shgetc(f)); + shunget(f); + return neg ? -y : y; +} + + +static long double decfloat(FILE *f, int c, int bits, int emin, int sign, int pok) +{ + uint32_t x[KMAX]; + static const uint32_t th[] = { LD_B1B_MAX }; + int i, j, k, a, z; + long long lrp=0, dc=0; + long long e10=0; + int lnz = 0; + int gotdig = 0, gotrad = 0; + int rp; + int e2; + int emax = -emin-bits+3; + int denormal = 0; + long double y; + long double frac=0; + long double bias=0; + static const int p10s[] = { 10, 100, 1000, 10000, + 100000, 1000000, 10000000, 100000000 }; + + j=0; + k=0; + + /* Don't let leading zeros consume buffer space */ + for (; c=='0'; c = shgetc(f)) gotdig=1; + if (c=='.') { + gotrad = 1; + for (c = shgetc(f); c=='0'; c = shgetc(f)) gotdig=1, lrp--; + } + + x[0] = 0; + for (; c-'0'<10U || c=='.'; c = shgetc(f)) { + if (c == '.') { + if (gotrad) break; + gotrad = 1; + lrp = dc; + } else if (k < KMAX-3) { + dc++; + if (c!='0') lnz = dc; + if (j) x[k] = x[k]*10 + c-'0'; + else x[k] = c-'0'; + if (++j==9) { + k++; + j=0; + } + gotdig=1; + } else { + dc++; + if (c!='0') x[KMAX-4] |= 1; + } + } + if (!gotrad) lrp=dc; + + if (gotdig && (c|32)=='e') { + e10 = scanexp(f, pok); + if (e10 == LLONG_MIN) { + if (pok) { + shunget(f); + } else { + shlim(f, 0); + return 0; + } + e10 = 0; + } + lrp += e10; + } else if (c>=0) { + shunget(f); + } + if (!gotdig) { + errno = EINVAL; + shlim(f, 0); + return 0; + } + + /* Handle zero specially to avoid nasty special cases later */ + if (!x[0]) return sign * 0.0; + + /* Optimize small integers (w/no exponent) and over/under-flow */ + if (lrp==dc && dc<10 && (bits>30 || x[0]>>bits==0)) + return sign * (long double)x[0]; + if (lrp > -emin/2) { + errno = ERANGE; + return sign * LDBL_MAX * LDBL_MAX; + } + if (lrp < emin-2*LDBL_MANT_DIG) { + errno = ERANGE; + return sign * LDBL_MIN * LDBL_MIN; + } + + /* Align incomplete final B1B digit */ + if (j) { + for (; j<9; j++) x[k]*=10; + k++; + j=0; + } + + a = 0; + z = k; + e2 = 0; + rp = lrp; + + /* Optimize small to mid-size integers (even in exp. notation) */ + if (lnz<9 && lnz<=rp && rp < 18) { + if (rp == 9) return sign * (long double)x[0]; + if (rp < 9) return sign * (long double)x[0] / p10s[8-rp]; + int bitlim = bits-3*(int)(rp-9); + if (bitlim>30 || x[0]>>bitlim==0) + return sign * (long double)x[0] * p10s[rp-10]; + } + + /* Align radix point to B1B digit boundary */ + if (rp % 9) { + int rpm9 = rp>=0 ? rp%9 : rp%9+9; + int p10 = p10s[8-rpm9]; + uint32_t carry = 0; + for (k=a; k!=z; k++) { + uint32_t tmp = x[k] % p10; + x[k] = x[k]/p10 + carry; + carry = 1000000000/p10 * tmp; + if (k==a && !x[k]) { + a = (a+1 & MASK); + rp -= 9; + } + } + if (carry) x[z++] = carry; + rp += 9-rpm9; + } + + /* Upscale until desired number of bits are left of radix point */ + while (rp < 9*LD_B1B_DIG || (rp == 9*LD_B1B_DIG && x[a]<th[0])) { + uint32_t carry = 0; + e2 -= 29; + for (k=(z-1 & MASK); ; k=(k-1 & MASK)) { + uint64_t tmp = ((uint64_t)x[k] << 29) + carry; + if (tmp > 1000000000) { + carry = tmp / 1000000000; + x[k] = tmp % 1000000000; + } else { + carry = 0; + x[k] = tmp; + } + if (k==(z-1 & MASK) && k!=a && !x[k]) z = k; + if (k==a) break; + } + if (carry) { + rp += 9; + a = (a-1 & MASK); + if (a == z) { + z = (z-1 & MASK); + x[z-1 & MASK] |= x[z]; + } + x[a] = carry; + } + } + + /* Downscale until exactly number of bits are left of radix point */ + for (;;) { + uint32_t carry = 0; + int sh = 1; + for (i=0; i<LD_B1B_DIG; i++) { + k = (a+i & MASK); + if (k == z || x[k] < th[i]) { + i=LD_B1B_DIG; + break; + } + if (x[a+i & MASK] > th[i]) break; + } + if (i==LD_B1B_DIG && rp==9*LD_B1B_DIG) break; + /* FIXME: find a way to compute optimal sh */ + if (rp > 9+9*LD_B1B_DIG) sh = 9; + e2 += sh; + for (k=a; k!=z; k=(k+1 & MASK)) { + uint32_t tmp = x[k] & (1<<sh)-1; + x[k] = (x[k]>>sh) + carry; + carry = (1000000000>>sh) * tmp; + if (k==a && !x[k]) { + a = (a+1 & MASK); + i--; + rp -= 9; + } + } + if (carry) { + if ((z+1 & MASK) != a) { + x[z] = carry; + z = (z+1 & MASK); + } else x[z-1 & MASK] |= 1; + } + } + + /* Assemble desired bits into floating point variable */ + for (y=i=0; i<LD_B1B_DIG; i++) { + if ((a+i & MASK)==z) x[(z=(z+1 & MASK))-1] = 0; + y = 1000000000.0L * y + x[a+i & MASK]; + } + + y *= sign; + + /* Limit precision for denormal results */ + if (bits > LDBL_MANT_DIG+e2-emin) { + bits = LDBL_MANT_DIG+e2-emin; + if (bits<0) bits=0; + denormal = 1; + } + + /* Calculate bias term to force rounding, move out lower bits */ + if (bits < LDBL_MANT_DIG) { + bias = copysignl(scalbn(1, 2*LDBL_MANT_DIG-bits-1), y); + frac = fmodl(y, scalbn(1, LDBL_MANT_DIG-bits)); + y -= frac; + y += bias; + } + + /* Process tail of decimal input so it can affect rounding */ + if ((a+i & MASK) != z) { + uint32_t t = x[a+i & MASK]; + if (t < 500000000 && (t || (a+i+1 & MASK) != z)) + frac += 0.25*sign; + else if (t > 500000000) + frac += 0.75*sign; + else if (t == 500000000) { + if ((a+i+1 & MASK) == z) + frac += 0.5*sign; + else + frac += 0.75*sign; + } + if (LDBL_MANT_DIG-bits >= 2 && !fmodl(frac, 1)) + frac++; + } + + y += frac; + y -= bias; + + if ((e2+LDBL_MANT_DIG & INT_MAX) > emax-5) { + if (fabs(y) >= CONCAT(0x1p, LDBL_MANT_DIG)) { + if (denormal && bits==LDBL_MANT_DIG+e2-emin) + denormal = 0; + y *= 0.5; + e2++; + } + if (e2+LDBL_MANT_DIG>emax || (denormal && frac)) + errno = ERANGE; + } + + return scalbnl(y, e2); +} + +static long double hexfloat(FILE *f, int bits, int emin, int sign, int pok) +{ + uint32_t x = 0; + long double y = 0; + long double scale = 1; + long double bias = 0; + int gottail = 0, gotrad = 0, gotdig = 0; + long long rp = 0; + long long dc = 0; + long long e2 = 0; + int d; + int c; + + c = shgetc(f); + + /* Skip leading zeros */ + for (; c=='0'; c = shgetc(f)) gotdig = 1; + + if (c=='.') { + gotrad = 1; + c = shgetc(f); + /* Count zeros after the radix point before significand */ + for (rp=0; c=='0'; c = shgetc(f), rp--) gotdig = 1; + } + + for (; c-'0'<10U || (c|32)-'a'<6U || c=='.'; c = shgetc(f)) { + if (c=='.') { + if (gotrad) break; + rp = dc; + gotrad = 1; + } else { + gotdig = 1; + if (c > '9') d = (c|32)+10-'a'; + else d = c-'0'; + if (dc<8) { + x = x*16 + d; + } else if (dc < LDBL_MANT_DIG/4+1) { + y += d*(scale/=16); + } else if (d && !gottail) { + y += 0.5*scale; + gottail = 1; + } + dc++; + } + } + if (!gotdig) { + shunget(f); + if (pok) { + shunget(f); + if (gotrad) shunget(f); + } else { + shlim(f, 0); + } + return sign * 0.0; + } + if (!gotrad) rp = dc; + while (dc<8) x *= 16, dc++; + if ((c|32)=='p') { + e2 = scanexp(f, pok); + if (e2 == LLONG_MIN) { + if (pok) { + shunget(f); + } else { + shlim(f, 0); + return 0; + } + e2 = 0; + } + } else { + shunget(f); + } + e2 += 4*rp - 32; + + if (!x) return sign * 0.0; + if (e2 > -emin) { + errno = ERANGE; + return sign * LDBL_MAX * LDBL_MAX; + } + if (e2 < emin-2*LDBL_MANT_DIG) { + errno = ERANGE; + return sign * LDBL_MIN * LDBL_MIN; + } + + while (x < 0x80000000) { + if (y>=0.5) { + x += x + 1; + y += y - 1; + } else { + x += x; + y += y; + } + e2--; + } + + if (bits > 32+e2-emin) { + bits = 32+e2-emin; + if (bits<0) bits=0; + } + + if (bits < LDBL_MANT_DIG) + bias = copysignl(scalbn(1, 32+LDBL_MANT_DIG-bits-1), sign); + + if (bits<32 && y && !(x&1)) x++, y=0; + + y = bias + sign*(long double)x + sign*y; + y -= bias; + + if (!y) errno = ERANGE; + + return scalbnl(y, e2); +} + +long double __floatscan(FILE *f, int prec, int pok) +{ + int sign = 1; + size_t i; + int bits; + int emin; + int c; + + switch (prec) { + case 0: + bits = FLT_MANT_DIG; + emin = FLT_MIN_EXP-bits; + break; + case 1: + bits = DBL_MANT_DIG; + emin = DBL_MIN_EXP-bits; + break; + case 2: + bits = LDBL_MANT_DIG; + emin = LDBL_MIN_EXP-bits; + break; + default: + return 0; + } + + while (isspace((c=shgetc(f)))); |