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https://github.com/freebsd/freebsd-src
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Cleanup debugging code in libm
David Das (das@) committed Bruce Evan's (bde's) WIP code for
expl() and logl() in git revision 25a4d6bfda. That code
included instrumentation that allowed bde to generate pari
scripts used in testing/debugging. This patch removes that
instrumentation as it is unlikely that others will ever use it.
* math/libm/msun/src/math_private.h:
. Remove bde's macros for the generation of pari scripts.
* math/libm/msun/ld128/s_expl.c:
* math/libm/msun/ld128/s_logl.c:
* math/libm/msun/ld80/s_expl.c:
* math/libm/msun/ld80/s_logl.c:
. Remove bde's DOPRINT_START macro.
. Change RETURNP to RETURNF.
. Change RETURN2P to RETURNF. Adjust arguments as needed.
. Change RETURNPI to RETURNI.
. Change RETURN2PI to RETURNI. Adjust arguments as needed.
PR: 272765
MFC after: 1 week
This commit is contained in:
Steve Kargl
Konstantin Belousov
parent
8a5c836b51
commit
c66a499e03
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@ -65,8 +65,6 @@ expl(long double x)
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int k;
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uint16_t hx, ix;
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DOPRINT_START(&x);
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/* Filter out exceptional cases. */
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u.e = x;
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hx = u.xbits.expsign;
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@ -74,15 +72,15 @@ expl(long double x)
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if (ix >= BIAS + 13) { /* |x| >= 8192 or x is NaN */
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if (ix == BIAS + LDBL_MAX_EXP) {
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if (hx & 0x8000) /* x is -Inf or -NaN */
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RETURNP(-1 / x);
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RETURNP(x + x); /* x is +Inf or +NaN */
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RETURNF(-1 / x);
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RETURNF(x + x); /* x is +Inf or +NaN */
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}
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if (x > o_threshold)
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RETURNP(huge * huge);
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RETURNF(huge * huge);
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if (x < u_threshold)
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RETURNP(tiny * tiny);
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RETURNF(tiny * tiny);
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} else if (ix < BIAS - 114) { /* |x| < 0x1p-114 */
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RETURN2P(1, x); /* 1 with inexact iff x != 0 */
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RETURNF(1 + x); /* 1 with inexact iff x != 0 */
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}
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ENTERI();
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@ -210,8 +208,6 @@ expm1l(long double x)
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int k, n, n2;
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uint16_t hx, ix;
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DOPRINT_START(&x);
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/* Filter out exceptional cases. */
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u.e = x;
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hx = u.xbits.expsign;
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@ -219,11 +215,11 @@ expm1l(long double x)
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if (ix >= BIAS + 7) { /* |x| >= 128 or x is NaN */
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if (ix == BIAS + LDBL_MAX_EXP) {
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if (hx & 0x8000) /* x is -Inf or -NaN */
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RETURNP(-1 / x - 1);
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RETURNP(x + x); /* x is +Inf or +NaN */
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RETURNF(-1 / x - 1);
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RETURNF(x + x); /* x is +Inf or +NaN */
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}
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if (x > o_threshold)
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RETURNP(huge * huge);
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RETURNF(huge * huge);
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/*
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* expm1l() never underflows, but it must avoid
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* unrepresentable large negative exponents. We used a
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@ -232,7 +228,7 @@ expm1l(long double x)
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* in the same way as large ones here.
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*/
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if (hx & 0x8000) /* x <= -128 */
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RETURN2P(tiny, -1); /* good for x < -114ln2 - eps */
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RETURNF(tiny - 1); /* good for x < -114ln2 - eps */
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}
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ENTERI();
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@ -244,7 +240,7 @@ expm1l(long double x)
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if (x < T3) {
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if (ix < BIAS - 113) { /* |x| < 0x1p-113 */
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/* x (rounded) with inexact if x != 0: */
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RETURNPI(x == 0 ? x :
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RETURNI(x == 0 ? x :
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(0x1p200 * x + fabsl(x)) * 0x1p-200);
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}
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q = x * x2 * C3 + x2 * x2 * (C4 + x * (C5 + x * (C6 +
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@ -265,9 +261,9 @@ expm1l(long double x)
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hx2_hi = x_hi * x_hi / 2;
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hx2_lo = x_lo * (x + x_hi) / 2;
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if (ix >= BIAS - 7)
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RETURN2PI(hx2_hi + x_hi, hx2_lo + x_lo + q);
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RETURNI((hx2_hi + x_hi) + (hx2_lo + x_lo + q));
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else
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RETURN2PI(x, hx2_lo + q + hx2_hi);
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RETURNI(x + (hx2_lo + q + hx2_hi));
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}
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/* Reduce x to (k*ln2 + endpoint[n2] + r1 + r2). */
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@ -573,24 +573,23 @@ log1pl(long double x)
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int i, k;
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int16_t ax, hx;
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DOPRINT_START(&x);
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EXTRACT_LDBL128_WORDS(hx, lx, llx, x);
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if (hx < 0x3fff) { /* x < 1, or x neg NaN */
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ax = hx & 0x7fff;
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if (ax >= 0x3fff) { /* x <= -1, or x neg NaN */
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if (ax == 0x3fff && (lx | llx) == 0)
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RETURNP(-1 / zero); /* log1p(-1) = -Inf */
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RETURNF(-1 / zero); /* log1p(-1) = -Inf */
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/* log1p(x < 1, or x NaN) = qNaN: */
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RETURNP((x - x) / (x - x));
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RETURNF((x - x) / (x - x));
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}
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if (ax <= 0x3f8d) { /* |x| < 2**-113 */
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if ((int)x == 0)
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RETURNP(x); /* x with inexact if x != 0 */
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RETURNF(x); /* x with inexact if x != 0 */
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}
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f_hi = 1;
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f_lo = x;
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} else if (hx >= 0x7fff) { /* x +Inf or non-neg NaN */
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RETURNP(x + x); /* log1p(Inf or NaN) = Inf or qNaN */
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RETURNF(x + x); /* log1p(Inf or NaN) = Inf or qNaN */
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} else if (hx < 0x40e1) { /* 1 <= x < 2**226 */
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f_hi = x;
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f_lo = 1;
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@ -669,7 +668,7 @@ log1pl(long double x)
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#endif
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_3sumF(val_hi, val_lo, F_hi(i) + dk * ln2_hi);
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RETURN2PI(val_hi, val_lo);
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RETURNI(val_hi + val_lo);
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}
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#ifdef STRUCT_RETURN
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@ -680,7 +679,6 @@ logl(long double x)
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struct ld r;
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ENTERI();
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DOPRINT_START(&x);
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k_logl(x, &r);
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RETURNSPI(&r);
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}
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@ -708,15 +706,13 @@ log10l(long double x)
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long double hi, lo;
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ENTERI();
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DOPRINT_START(&x);
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k_logl(x, &r);
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if (!r.lo_set)
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RETURNPI(r.hi);
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RETURNI(r.hi);
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_2sumF(r.hi, r.lo);
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hi = (float)r.hi;
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lo = r.lo + (r.hi - hi);
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RETURN2PI(invln10_hi * hi,
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invln10_lo_plus_hi * lo + invln10_lo * hi);
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RETURNI(invln10_hi * hi + (invln10_lo_plus_hi * lo + invln10_lo * hi));
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}
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long double
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@ -726,15 +722,13 @@ log2l(long double x)
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long double hi, lo;
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ENTERI();
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DOPRINT_START(&x);
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k_logl(x, &r);
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if (!r.lo_set)
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RETURNPI(r.hi);
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RETURNI(r.hi);
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_2sumF(r.hi, r.lo);
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hi = (float)r.hi;
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lo = r.lo + (r.hi - hi);
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RETURN2PI(invln2_hi * hi,
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invln2_lo_plus_hi * lo + invln2_lo * hi);
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RETURNI(invln2_hi * hi + (invln2_lo_plus_hi * lo + invln2_lo * hi));
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}
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#endif /* STRUCT_RETURN */
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@ -77,8 +77,6 @@ expl(long double x)
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int k;
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uint16_t hx, ix;
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DOPRINT_START(&x);
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/* Filter out exceptional cases. */
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u.e = x;
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hx = u.xbits.expsign;
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@ -86,15 +84,15 @@ expl(long double x)
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if (ix >= BIAS + 13) { /* |x| >= 8192 or x is NaN */
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if (ix == BIAS + LDBL_MAX_EXP) {
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if (hx & 0x8000) /* x is -Inf, -NaN or unsupported */
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RETURNP(-1 / x);
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RETURNP(x + x); /* x is +Inf, +NaN or unsupported */
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RETURNF(-1 / x);
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RETURNF(x + x); /* x is +Inf, +NaN or unsupported */
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}
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if (x > o_threshold)
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RETURNP(huge * huge);
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RETURNF(huge * huge);
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if (x < u_threshold)
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RETURNP(tiny * tiny);
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RETURNF(tiny * tiny);
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} else if (ix < BIAS - 75) { /* |x| < 0x1p-75 (includes pseudos) */
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RETURN2P(1, x); /* 1 with inexact iff x != 0 */
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RETURNF(1 + x); /* 1 with inexact iff x != 0 */
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}
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ENTERI();
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@ -168,8 +166,6 @@ expm1l(long double x)
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int k, n, n2;
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uint16_t hx, ix;
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DOPRINT_START(&x);
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/* Filter out exceptional cases. */
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u.e = x;
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hx = u.xbits.expsign;
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@ -177,11 +173,11 @@ expm1l(long double x)
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if (ix >= BIAS + 6) { /* |x| >= 64 or x is NaN */
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if (ix == BIAS + LDBL_MAX_EXP) {
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if (hx & 0x8000) /* x is -Inf, -NaN or unsupported */
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RETURNP(-1 / x - 1);
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RETURNP(x + x); /* x is +Inf, +NaN or unsupported */
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RETURNF(-1 / x - 1);
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RETURNF(x + x); /* x is +Inf, +NaN or unsupported */
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}
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if (x > o_threshold)
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RETURNP(huge * huge);
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RETURNF(huge * huge);
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/*
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* expm1l() never underflows, but it must avoid
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* unrepresentable large negative exponents. We used a
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@ -190,7 +186,7 @@ expm1l(long double x)
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* in the same way as large ones here.
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*/
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if (hx & 0x8000) /* x <= -64 */
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RETURN2P(tiny, -1); /* good for x < -65ln2 - eps */
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RETURNF(tiny - 1); /* good for x < -65ln2 - eps */
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}
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ENTERI();
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@ -198,7 +194,7 @@ expm1l(long double x)
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if (T1 < x && x < T2) {
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if (ix < BIAS - 74) { /* |x| < 0x1p-74 (includes pseudos) */
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/* x (rounded) with inexact if x != 0: */
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RETURNPI(x == 0 ? x :
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RETURNI(x == 0 ? x :
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(0x1p100 * x + fabsl(x)) * 0x1p-100);
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}
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@ -219,9 +215,9 @@ expm1l(long double x)
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hx2_hi = x_hi * x_hi / 2;
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hx2_lo = x_lo * (x + x_hi) / 2;
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if (ix >= BIAS - 7)
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RETURN2PI(hx2_hi + x_hi, hx2_lo + x_lo + q);
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RETURNI((hx2_hi + x_hi) + (hx2_lo + x_lo + q));
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else
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RETURN2PI(x, hx2_lo + q + hx2_hi);
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RETURNI(x + (hx2_lo + q + hx2_hi));
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}
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/* Reduce x to (k*ln2 + endpoint[n2] + r1 + r2). */
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@ -560,24 +560,23 @@ log1pl(long double x)
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int i, k;
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int16_t ax, hx;
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DOPRINT_START(&x);
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EXTRACT_LDBL80_WORDS(hx, lx, x);
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if (hx < 0x3fff) { /* x < 1, or x neg NaN */
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ax = hx & 0x7fff;
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if (ax >= 0x3fff) { /* x <= -1, or x neg NaN */
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if (ax == 0x3fff && lx == 0x8000000000000000ULL)
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RETURNP(-1 / zero); /* log1p(-1) = -Inf */
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RETURNF(-1 / zero); /* log1p(-1) = -Inf */
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/* log1p(x < 1, or x [pseudo-]NaN) = qNaN: */
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RETURNP((x - x) / (x - x));
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RETURNF((x - x) / (x - x));
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}
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if (ax <= 0x3fbe) { /* |x| < 2**-64 */
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if ((int)x == 0)
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RETURNP(x); /* x with inexact if x != 0 */
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RETURNF(x); /* x with inexact if x != 0 */
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}
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f_hi = 1;
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f_lo = x;
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} else if (hx >= 0x7fff) { /* x +Inf or non-neg NaN */
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RETURNP(x + x); /* log1p(Inf or NaN) = Inf or qNaN */
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RETURNF(x + x); /* log1p(Inf or NaN) = Inf or qNaN */
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/* log1p(pseudo-Inf) = qNaN */
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/* log1p(pseudo-NaN) = qNaN */
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/* log1p(unnormal) = qNaN */
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@ -658,7 +657,7 @@ log1pl(long double x)
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#endif
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_3sumF(val_hi, val_lo, F_hi(i) + dk * ln2_hi);
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RETURN2PI(val_hi, val_lo);
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RETURNI(val_hi + val_lo);
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}
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#ifdef STRUCT_RETURN
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@ -669,7 +668,6 @@ logl(long double x)
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struct ld r;
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ENTERI();
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DOPRINT_START(&x);
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k_logl(x, &r);
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RETURNSPI(&r);
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}
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@ -690,15 +688,14 @@ log10l(long double x)
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long double hi, lo;
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ENTERI();
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DOPRINT_START(&x);
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k_logl(x, &r);
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if (!r.lo_set)
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RETURNPI(r.hi);
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RETURNI(r.hi);
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_2sumF(r.hi, r.lo);
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hi = (float)r.hi;
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lo = r.lo + (r.hi - hi);
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RETURN2PI(invln10_hi * hi,
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invln10_lo_plus_hi * lo + invln10_lo * hi);
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RETURNI(invln10_hi * hi +
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(invln10_lo_plus_hi * lo + invln10_lo * hi));
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}
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long double
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@ -708,15 +705,14 @@ log2l(long double x)
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long double hi, lo;
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ENTERI();
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DOPRINT_START(&x);
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k_logl(x, &r);
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if (!r.lo_set)
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RETURNPI(r.hi);
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RETURNI(r.hi);
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_2sumF(r.hi, r.lo);
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hi = (float)r.hi;
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lo = r.lo + (r.hi - hi);
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RETURN2PI(invln2_hi * hi,
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invln2_lo_plus_hi * lo + invln2_lo * hi);
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RETURNI(invln2_hi * hi +
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(invln2_lo_plus_hi * lo + invln2_lo * hi));
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}
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#endif /* STRUCT_RETURN */
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@ -698,127 +698,22 @@ irintl(long double x)
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#endif
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#endif
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/* Write a pari script to test things externally. */
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#ifdef DOPRINT
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#include <stdio.h>
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#ifndef DOPRINT_SWIZZLE
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#define DOPRINT_SWIZZLE 0
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#endif
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#ifdef DOPRINT_LD80
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#define DOPRINT_START(xp) do { \
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uint64_t __lx; \
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uint16_t __hx; \
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\
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/* Hack to give more-problematic args. */ \
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EXTRACT_LDBL80_WORDS(__hx, __lx, *xp); \
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__lx ^= DOPRINT_SWIZZLE; \
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INSERT_LDBL80_WORDS(*xp, __hx, __lx); \
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printf("x = %.21Lg; ", (long double)*xp); \
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} while (0)
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#define DOPRINT_END1(v) \
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printf("y = %.21Lg; z = 0; show(x, y, z);\n", (long double)(v))
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#define DOPRINT_END2(hi, lo) \
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printf("y = %.21Lg; z = %.21Lg; show(x, y, z);\n", \
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(long double)(hi), (long double)(lo))
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#elif defined(DOPRINT_D64)
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#define DOPRINT_START(xp) do { \
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uint32_t __hx, __lx; \
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\
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EXTRACT_WORDS(__hx, __lx, *xp); \
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__lx ^= DOPRINT_SWIZZLE; \
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INSERT_WORDS(*xp, __hx, __lx); \
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printf("x = %.21Lg; ", (long double)*xp); \
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} while (0)
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#define DOPRINT_END1(v) \
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printf("y = %.21Lg; z = 0; show(x, y, z);\n", (long double)(v))
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#define DOPRINT_END2(hi, lo) \
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printf("y = %.21Lg; z = %.21Lg; show(x, y, z);\n", \
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(long double)(hi), (long double)(lo))
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#elif defined(DOPRINT_F32)
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#define DOPRINT_START(xp) do { \
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uint32_t __hx; \
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||||
\
|
||||
GET_FLOAT_WORD(__hx, *xp); \
|
||||
__hx ^= DOPRINT_SWIZZLE; \
|
||||
SET_FLOAT_WORD(*xp, __hx); \
|
||||
printf("x = %.21Lg; ", (long double)*xp); \
|
||||
} while (0)
|
||||
#define DOPRINT_END1(v) \
|
||||
printf("y = %.21Lg; z = 0; show(x, y, z);\n", (long double)(v))
|
||||
#define DOPRINT_END2(hi, lo) \
|
||||
printf("y = %.21Lg; z = %.21Lg; show(x, y, z);\n", \
|
||||
(long double)(hi), (long double)(lo))
|
||||
|
||||
#else /* !DOPRINT_LD80 && !DOPRINT_D64 (LD128 only) */
|
||||
|
||||
#ifndef DOPRINT_SWIZZLE_HIGH
|
||||
#define DOPRINT_SWIZZLE_HIGH 0
|
||||
#endif
|
||||
|
||||
#define DOPRINT_START(xp) do { \
|
||||
uint64_t __lx, __llx; \
|
||||
uint16_t __hx; \
|
||||
\
|
||||
EXTRACT_LDBL128_WORDS(__hx, __lx, __llx, *xp); \
|
||||
__llx ^= DOPRINT_SWIZZLE; \
|
||||
__lx ^= DOPRINT_SWIZZLE_HIGH; \
|
||||
INSERT_LDBL128_WORDS(*xp, __hx, __lx, __llx); \
|
||||
printf("x = %.36Lg; ", (long double)*xp); \
|
||||
} while (0)
|
||||
#define DOPRINT_END1(v) \
|
||||
printf("y = %.36Lg; z = 0; show(x, y, z);\n", (long double)(v))
|
||||
#define DOPRINT_END2(hi, lo) \
|
||||
printf("y = %.36Lg; z = %.36Lg; show(x, y, z);\n", \
|
||||
(long double)(hi), (long double)(lo))
|
||||
|
||||
#endif /* DOPRINT_LD80 */
|
||||
|
||||
#else /* !DOPRINT */
|
||||
#define DOPRINT_START(xp)
|
||||
#define DOPRINT_END1(v)
|
||||
#define DOPRINT_END2(hi, lo)
|
||||
#endif /* DOPRINT */
|
||||
|
||||
#define RETURNP(x) do { \
|
||||
DOPRINT_END1(x); \
|
||||
RETURNF(x); \
|
||||
} while (0)
|
||||
#define RETURNPI(x) do { \
|
||||
DOPRINT_END1(x); \
|
||||
RETURNI(x); \
|
||||
} while (0)
|
||||
#define RETURN2P(x, y) do { \
|
||||
DOPRINT_END2((x), (y)); \
|
||||
RETURNF((x) + (y)); \
|
||||
} while (0)
|
||||
#define RETURN2PI(x, y) do { \
|
||||
DOPRINT_END2((x), (y)); \
|
||||
RETURNI((x) + (y)); \
|
||||
} while (0)
|
||||
#ifdef STRUCT_RETURN
|
||||
#define RETURNSP(rp) do { \
|
||||
if (!(rp)->lo_set) \
|
||||
RETURNP((rp)->hi); \
|
||||
RETURN2P((rp)->hi, (rp)->lo); \
|
||||
RETURNF((rp)->hi); \
|
||||
RETURNF((rp)->hi + (rp)->lo); \
|
||||
} while (0)
|
||||
#define RETURNSPI(rp) do { \
|
||||
if (!(rp)->lo_set) \
|
||||
RETURNPI((rp)->hi); \
|
||||
RETURN2PI((rp)->hi, (rp)->lo); \
|
||||
RETURNI((rp)->hi); \
|
||||
RETURNI((rp)->hi + (rp)->lo); \
|
||||
} while (0)
|
||||
#endif
|
||||
|
||||
#define SUM2P(x, y) ({ \
|
||||
const __typeof (x) __x = (x); \
|
||||
const __typeof (y) __y = (y); \
|
||||
\
|
||||
DOPRINT_END2(__x, __y); \
|
||||
__x + __y; \
|
||||
})
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue