29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel#if defined(ELFOBJ)

29949e866e40b95795203f3ee46f44a197c946e4stevel#pragma weak llrintl = __llrintl

29949e866e40b95795203f3ee46f44a197c946e4stevel#if defined(__sparcv9) || defined(__amd64)

29949e866e40b95795203f3ee46f44a197c946e4stevel#pragma weak lrintl = __llrintl

29949e866e40b95795203f3ee46f44a197c946e4stevel#pragma weak __lrintl = __llrintl

29949e866e40b95795203f3ee46f44a197c946e4stevel#endif

29949e866e40b95795203f3ee46f44a197c946e4stevel#endif

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel#include "libm.h"

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel#if defined(__sparc)

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel#include "fma.h"

29949e866e40b95795203f3ee46f44a197c946e4stevel#include "fenv_inlines.h"

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevellong long

29949e866e40b95795203f3ee46f44a197c946e4stevelllrintl(long double x) {

29949e866e40b95795203f3ee46f44a197c946e4stevel union {

29949e866e40b95795203f3ee46f44a197c946e4stevel unsigned i[4];

29949e866e40b95795203f3ee46f44a197c946e4stevel long double q;

29949e866e40b95795203f3ee46f44a197c946e4stevel } xx;

29949e866e40b95795203f3ee46f44a197c946e4stevel union {

29949e866e40b95795203f3ee46f44a197c946e4stevel unsigned i[2];

29949e866e40b95795203f3ee46f44a197c946e4stevel long long l;

29949e866e40b95795203f3ee46f44a197c946e4stevel } zz;

29949e866e40b95795203f3ee46f44a197c946e4stevel union {

29949e866e40b95795203f3ee46f44a197c946e4stevel unsigned i;

29949e866e40b95795203f3ee46f44a197c946e4stevel float f;

29949e866e40b95795203f3ee46f44a197c946e4stevel } tt;

29949e866e40b95795203f3ee46f44a197c946e4stevel unsigned int hx, sx, frac, fsr;

29949e866e40b95795203f3ee46f44a197c946e4stevel int rm, j;

29949e866e40b95795203f3ee46f44a197c946e4stevel volatile float dummy;

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel xx.q = x;

29949e866e40b95795203f3ee46f44a197c946e4stevel sx = xx.i[0] & 0x80000000;

29949e866e40b95795203f3ee46f44a197c946e4stevel hx = xx.i[0] & ~0x80000000;

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* handle trivial cases */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (hx > 0x403e0000) { /* |x| > 2^63 + ... or x is nan */

29949e866e40b95795203f3ee46f44a197c946e4stevel /* convert an out-of-range float */

29949e866e40b95795203f3ee46f44a197c946e4stevel tt.i = sx | 0x7f000000;

29949e866e40b95795203f3ee46f44a197c946e4stevel return ((long long) tt.f);

29949e866e40b95795203f3ee46f44a197c946e4stevel } else if ((hx | xx.i[1] | xx.i[2] | xx.i[3]) == 0) /* x is zero */

29949e866e40b95795203f3ee46f44a197c946e4stevel return (0LL);

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* get the rounding mode */

29949e866e40b95795203f3ee46f44a197c946e4stevel __fenv_getfsr32(&fsr);

29949e866e40b95795203f3ee46f44a197c946e4stevel rm = fsr >> 30;

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* flip the sense of directed roundings if x is negative */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (sx)

29949e866e40b95795203f3ee46f44a197c946e4stevel rm ^= rm >> 1;

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* handle |x| < 1 */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (hx < 0x3fff0000) {

29949e866e40b95795203f3ee46f44a197c946e4stevel dummy = 1.0e30f; /* x is nonzero, so raise inexact */

29949e866e40b95795203f3ee46f44a197c946e4stevel dummy += 1.0e-30f;

29949e866e40b95795203f3ee46f44a197c946e4stevel if (rm == FSR_RP || (rm == FSR_RN && (hx >= 0x3ffe0000 &&

29949e866e40b95795203f3ee46f44a197c946e4stevel ((hx & 0xffff) | xx.i[1] | xx.i[2] | xx.i[3]))))

29949e866e40b95795203f3ee46f44a197c946e4stevel return (sx ? -1LL : 1LL);

29949e866e40b95795203f3ee46f44a197c946e4stevel return (0LL);

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* extract the integer and fractional parts of x */

29949e866e40b95795203f3ee46f44a197c946e4stevel j = 0x406f - (hx >> 16);

29949e866e40b95795203f3ee46f44a197c946e4stevel xx.i[0] = 0x10000 | (xx.i[0] & 0xffff);

29949e866e40b95795203f3ee46f44a197c946e4stevel if (j >= 96) {

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[0] = 0;

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[1] = xx.i[0] >> (j - 96);

29949e866e40b95795203f3ee46f44a197c946e4stevel frac = ((xx.i[0] << 1) << (127 - j)) | (xx.i[1] >> (j - 96));

29949e866e40b95795203f3ee46f44a197c946e4stevel if (((xx.i[1] << 1) << (127 - j)) | xx.i[2] | xx.i[3])

29949e866e40b95795203f3ee46f44a197c946e4stevel frac |= 1;

29949e866e40b95795203f3ee46f44a197c946e4stevel } else if (j >= 64) {

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[0] = xx.i[0] >> (j - 64);

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[1] = ((xx.i[0] << 1) << (95 - j)) | (xx.i[1] >> (j - 64));

29949e866e40b95795203f3ee46f44a197c946e4stevel frac = ((xx.i[1] << 1) << (95 - j)) | (xx.i[2] >> (j - 64));

29949e866e40b95795203f3ee46f44a197c946e4stevel if (((xx.i[2] << 1) << (95 - j)) | xx.i[3])

29949e866e40b95795203f3ee46f44a197c946e4stevel frac |= 1;

29949e866e40b95795203f3ee46f44a197c946e4stevel } else {

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[0] = ((xx.i[0] << 1) << (63 - j)) | (xx.i[1] >> (j - 32));

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[1] = ((xx.i[1] << 1) << (63 - j)) | (xx.i[2] >> (j - 32));

29949e866e40b95795203f3ee46f44a197c946e4stevel frac = ((xx.i[2] << 1) << (63 - j)) | (xx.i[3] >> (j - 32));

29949e866e40b95795203f3ee46f44a197c946e4stevel if ((xx.i[3] << 1) << (63 - j))

29949e866e40b95795203f3ee46f44a197c946e4stevel frac |= 1;

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* round */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (frac && (rm == FSR_RP || (rm == FSR_RN && (frac > 0x80000000u ||

29949e866e40b95795203f3ee46f44a197c946e4stevel (frac == 0x80000000 && (zz.i[1] & 1)))))) {

29949e866e40b95795203f3ee46f44a197c946e4stevel if (++zz.i[1] == 0)

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[0]++;

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* check for result out of range (note that z is |x| at this point) */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (zz.i[0] > 0x80000000u || (zz.i[0] == 0x80000000 && (zz.i[1] ||

29949e866e40b95795203f3ee46f44a197c946e4stevel !sx))) {

29949e866e40b95795203f3ee46f44a197c946e4stevel tt.i = sx | 0x7f000000;

29949e866e40b95795203f3ee46f44a197c946e4stevel return ((long long) tt.f);

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* raise inexact if need be */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (frac) {

29949e866e40b95795203f3ee46f44a197c946e4stevel dummy = 1.0e30F;

29949e866e40b95795203f3ee46f44a197c946e4stevel dummy += 1.0e-30F;

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* negate result if need be */

29949e866e40b95795203f3ee46f44a197c946e4stevel if (sx) {

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[0] = ~zz.i[0];

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[1] = -zz.i[1];

29949e866e40b95795203f3ee46f44a197c946e4stevel if (zz.i[1] == 0)

29949e866e40b95795203f3ee46f44a197c946e4stevel zz.i[0]++;

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel return (zz.l);

29949e866e40b95795203f3ee46f44a197c946e4stevel}

29949e866e40b95795203f3ee46f44a197c946e4stevel#elif defined(__x86)

29949e866e40b95795203f3ee46f44a197c946e4stevellong long

29949e866e40b95795203f3ee46f44a197c946e4stevelllrintl(long double x) {

29949e866e40b95795203f3ee46f44a197c946e4stevel /*

29949e866e40b95795203f3ee46f44a197c946e4stevel union {

29949e866e40b95795203f3ee46f44a197c946e4stevel unsigned i[3];

29949e866e40b95795203f3ee46f44a197c946e4stevel long double e;

29949e866e40b95795203f3ee46f44a197c946e4stevel } xx, yy;

29949e866e40b95795203f3ee46f44a197c946e4stevel int ex;

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel xx.e = x;

29949e866e40b95795203f3ee46f44a197c946e4stevel ex = xx.i[2] & 0x7fff;

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel if (ex < 0x403e) { /* |x| < 2^63 */

29949e866e40b95795203f3ee46f44a197c946e4stevel /* add and subtract a power of two to round x to an integer */

29949e866e40b95795203f3ee46f44a197c946e4stevel yy.i[2] = (xx.i[2] & 0x8000) | 0x403e;

29949e866e40b95795203f3ee46f44a197c946e4stevel yy.i[1] = 0x80000000;

29949e866e40b95795203f3ee46f44a197c946e4stevel yy.i[0] = 0;

29949e866e40b95795203f3ee46f44a197c946e4stevel x = (x + yy.e) - yy.e;

29949e866e40b95795203f3ee46f44a197c946e4stevel }

29949e866e40b95795203f3ee46f44a197c946e4stevel

29949e866e40b95795203f3ee46f44a197c946e4stevel /* now x is nan, inf, or integral */

29949e866e40b95795203f3ee46f44a197c946e4stevel return ((long long) x);

29949e866e40b95795203f3ee46f44a197c946e4stevel}

29949e866e40b95795203f3ee46f44a197c946e4stevel#else

29949e866e40b95795203f3ee46f44a197c946e4stevel#error Unknown architecture

29949e866e40b95795203f3ee46f44a197c946e4stevel#endif

29949e866e40b95795203f3ee46f44a197c946e4stevel