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11210 libm should be cstyle(1ONBLD) clean

*** 20,29 **** --- 20,30 ---- */ /* * Copyright 2011 Nexenta Systems, Inc. All rights reserved. */ + /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */
*** 60,73 **** #include <float.h> /* LDBL_MAX */ #define GENERIC long double static const GENERIC ! invsqrtpi = 5.641895835477562869480794515607725858441e-0001L, ! two = 2.0L, ! zero = 0.0L, ! one = 1.0L; GENERIC jnl(int n, GENERIC x) { int i, sgn; --- 61,74 ---- #include <float.h> /* LDBL_MAX */ #define GENERIC long double static const GENERIC ! invsqrtpi = 5.641895835477562869480794515607725858441e-0001L, ! two = 2.0L, ! zero = 0.0L, ! one = 1.0L; GENERIC jnl(int n, GENERIC x) { int i, sgn;
*** 79,101 **** */ if (n < 0) { n = -n; x = -x; } if (n == 0) return (j0l(x)); if (n == 1) return (j1l(x)); if (x != x) ! return (x+x); ! if ((n&1) == 0) sgn = 0; /* even n */ else sgn = signbitl(x); /* old n */ x = fabsl(x); ! if (x == zero || !finitel(x)) b = zero; ! else if ((GENERIC)n <= x) { /* * Safe to use * J(n+1,x)=2n/x *J(n,x)-J(n-1,x) */ if (x > 1.0e91L) { --- 80,109 ---- */ if (n < 0) { n = -n; x = -x; } + if (n == 0) return (j0l(x)); + if (n == 1) return (j1l(x)); + if (x != x) ! return (x + x); ! ! if ((n & 1) == 0) sgn = 0; /* even n */ else sgn = signbitl(x); /* old n */ + x = fabsl(x); ! ! if (x == zero || !finitel(x)) { ! b = zero; ! } else if ((GENERIC)n <= x) { /* * Safe to use * J(n+1,x)=2n/x *J(n,x)-J(n-1,x) */ if (x > 1.0e91L) {
*** 111,152 **** * 0 s-c c+s * 1 -s-c -c+s * 2 -s+c -c-s * 3 s+c c-s */ ! switch (n&3) { case 0: ! temp = cosl(x)+sinl(x); break; case 1: ! temp = -cosl(x)+sinl(x); break; case 2: ! temp = -cosl(x)-sinl(x); break; case 3: ! temp = cosl(x)-sinl(x); break; } ! b = invsqrtpi*temp/sqrtl(x); } else { a = j0l(x); b = j1l(x); for (i = 1; i < n; i++) { temp = b; /* avoid underflow */ ! b = b*((GENERIC)(i+i)/x) - a; a = temp; } } } else { if (x < 1e-17L) { /* use J(n,x) = 1/n!*(x/2)^n */ ! b = powl(0.5L*x, (GENERIC)n); if (b != zero) { for (a = one, i = 1; i <= n; i++) a *= (GENERIC)i; ! b = b/a; } } else { /* use backward recurrence */ /* BEGIN CSTYLED */ /* --- 119,164 ---- * 0 s-c c+s * 1 -s-c -c+s * 2 -s+c -c-s * 3 s+c c-s */ ! switch (n & 3) { case 0: ! temp = cosl(x) + sinl(x); break; case 1: ! temp = -cosl(x) + sinl(x); break; case 2: ! temp = -cosl(x) - sinl(x); break; case 3: ! temp = cosl(x) - sinl(x); break; } ! ! b = invsqrtpi * temp / sqrtl(x); } else { a = j0l(x); b = j1l(x); + for (i = 1; i < n; i++) { temp = b; /* avoid underflow */ ! b = b * ((GENERIC)(i + i) / x) - a; a = temp; } } } else { if (x < 1e-17L) { /* use J(n,x) = 1/n!*(x/2)^n */ ! b = powl(0.5L * x, (GENERIC)n); ! if (b != zero) { for (a = one, i = 1; i <= n; i++) a *= (GENERIC)i; ! ! b = b / a; } } else { /* use backward recurrence */ /* BEGIN CSTYLED */ /*
*** 180,207 **** /* END CSTYLED */ /* determine k */ GENERIC t, v; double q0, q1, h, tmp; int k, m; ! w = (n+n)/(double)x; ! h = 2.0/(double)x; q0 = w; ! z = w+h; ! q1 = w*z - 1.0; k = 1; while (q1 < 1.0e17) { k += 1; z += h; ! tmp = z*q1 - q0; q0 = q1; q1 = tmp; } ! m = n+n; ! for (t = zero, i = 2*(n+k); i >= m; i -= 2) ! t = one/(i/x-t); a = t; b = one; /* * estimate log((2/x)^n*n!) = n*log(2/x)+n*ln(n) * hence, if n*(log(2n/x)) > ... * single: * 8.8722839355e+01 --- 192,225 ---- /* END CSTYLED */ /* determine k */ GENERIC t, v; double q0, q1, h, tmp; int k, m; ! ! w = (n + n) / (double)x; ! h = 2.0 / (double)x; q0 = w; ! z = w + h; ! q1 = w * z - 1.0; k = 1; + while (q1 < 1.0e17) { k += 1; z += h; ! tmp = z * q1 - q0; q0 = q1; q1 = tmp; } ! ! m = n + n; ! ! for (t = zero, i = 2 * (n + k); i >= m; i -= 2) ! t = one / (i / x - t); ! a = t; b = one; + /* * estimate log((2/x)^n*n!) = n*log(2/x)+n*ln(n) * hence, if n*(log(2n/x)) > ... * single: * 8.8722839355e+01
*** 211,243 **** * 1.1356523406294143949491931077970765006170e+04 * then recurrent value may overflow and the result is * likely underflow to zero */ tmp = n; ! v = two/x; ! tmp = tmp*logl(fabsl(v*tmp)); if (tmp < 1.1356523406294143949491931077970765e+04L) { ! for (i = n-1; i > 0; i--) { temp = b; ! b = ((i+i)/x)*b - a; a = temp; } } else { ! for (i = n-1; i > 0; i--) { temp = b; ! b = ((i+i)/x)*b - a; a = temp; if (b > 1e1000L) { a /= b; t /= b; b = 1.0; } } } ! b = (t*j0l(x)/b); } } if (sgn != 0) return (-b); else return (b); } --- 229,265 ---- * 1.1356523406294143949491931077970765006170e+04 * then recurrent value may overflow and the result is * likely underflow to zero */ tmp = n; ! v = two / x; ! tmp = tmp * logl(fabsl(v * tmp)); ! if (tmp < 1.1356523406294143949491931077970765e+04L) { ! for (i = n - 1; i > 0; i--) { temp = b; ! b = ((i + i) / x) * b - a; a = temp; } } else { ! for (i = n - 1; i > 0; i--) { temp = b; ! b = ((i + i) / x) * b - a; a = temp; + if (b > 1e1000L) { a /= b; t /= b; b = 1.0; } } } ! ! b = (t * j0l(x) / b); } } + if (sgn != 0) return (-b); else return (b); }
*** 248,273 **** int i; int sign; GENERIC a, b, temp; if (x != x) ! return (x+x); if (x <= zero) { if (x == zero) ! return (-one/zero); else ! return (zero/zero); } sign = 1; if (n < 0) { n = -n; ! if ((n&1) == 1) sign = -1; } if (n == 0) return (y0l(x)); if (n == 1) ! return (sign*y1l(x)); if (!finitel(x)) return (zero); if (x > 1.0e91L) { /* --- 270,303 ---- int i; int sign; GENERIC a, b, temp; if (x != x) ! return (x + x); ! if (x <= zero) { if (x == zero) ! return (-one / zero); else ! return (zero / zero); } + sign = 1; + if (n < 0) { n = -n; ! ! if ((n & 1) == 1) ! sign = -1; } + if (n == 0) return (y0l(x)); + if (n == 1) ! return (sign * y1l(x)); ! if (!finitel(x)) return (zero); if (x > 1.0e91L) { /*
*** 282,321 **** * 0 s-c c+s * 1 -s-c -c+s * 2 -s+c -c-s * 3 s+c c-s */ ! switch (n&3) { case 0: ! temp = sinl(x)-cosl(x); break; case 1: ! temp = -sinl(x)-cosl(x); break; case 2: ! temp = -sinl(x)+cosl(x); break; case 3: ! temp = sinl(x)+cosl(x); break; } ! b = invsqrtpi*temp/sqrtl(x); } else { a = y0l(x); b = y1l(x); /* * fix 1262058 and take care of non-default rounding */ for (i = 1; i < n; i++) { temp = b; ! b *= (GENERIC) (i + i) / x; if (b <= -LDBL_MAX) break; b -= a; a = temp; } } if (sign > 0) return (b); else return (-b); } --- 312,356 ---- * 0 s-c c+s * 1 -s-c -c+s * 2 -s+c -c-s * 3 s+c c-s */ ! switch (n & 3) { case 0: ! temp = sinl(x) - cosl(x); break; case 1: ! temp = -sinl(x) - cosl(x); break; case 2: ! temp = -sinl(x) + cosl(x); break; case 3: ! temp = sinl(x) + cosl(x); break; } ! ! b = invsqrtpi * temp / sqrtl(x); } else { a = y0l(x); b = y1l(x); + /* * fix 1262058 and take care of non-default rounding */ for (i = 1; i < n; i++) { temp = b; ! b *= (GENERIC)(i + i) / x; ! if (b <= -LDBL_MAX) break; + b -= a; a = temp; } } + if (sign > 0) return (b); else return (-b); }