diff options
Diffstat (limited to 'lib/msun/bsdsrc')
| -rw-r--r-- | lib/msun/bsdsrc/b_exp.c | 50 | ||||
| -rw-r--r-- | lib/msun/bsdsrc/mathimpl.h | 47 |
2 files changed, 10 insertions, 87 deletions
diff --git a/lib/msun/bsdsrc/b_exp.c b/lib/msun/bsdsrc/b_exp.c index 64d9a3d..dff6282 100644 --- a/lib/msun/bsdsrc/b_exp.c +++ b/lib/msun/bsdsrc/b_exp.c @@ -72,50 +72,20 @@ __FBSDID("$FreeBSD$"); * exp(x) returns the exponential of x nearly rounded. In a test run * with 1,156,000 random arguments on a VAX, the maximum observed * error was 0.869 ulps (units in the last place). - * - * Constants: - * The hexadecimal values are the intended ones for the following constants. - * The decimal values may be used, provided that the compiler will convert - * from decimal to binary accurately enough to produce the hexadecimal values - * shown. */ #include "mathimpl.h" -vc(ln2hi, 6.9314718055829871446E-1 ,7217,4031,0000,f7d0, 0, .B17217F7D00000) -vc(ln2lo, 1.6465949582897081279E-12 ,bcd5,2ce7,d9cc,e4f1, -39, .E7BCD5E4F1D9CC) -vc(lnhuge, 9.4961163736712506989E1 ,ec1d,43bd,9010,a73e, 7, .BDEC1DA73E9010) -vc(lntiny,-9.5654310917272452386E1 ,4f01,c3bf,33af,d72e, 7,-.BF4F01D72E33AF) -vc(invln2, 1.4426950408889634148E0 ,aa3b,40b8,17f1,295c, 1, .B8AA3B295C17F1) -vc(p1, 1.6666666666666602251E-1 ,aaaa,3f2a,a9f1,aaaa, -2, .AAAAAAAAAAA9F1) -vc(p2, -2.7777777777015591216E-3 ,0b60,bc36,ec94,b5f5, -8,-.B60B60B5F5EC94) -vc(p3, 6.6137563214379341918E-5 ,b355,398a,f15f,792e, -13, .8AB355792EF15F) -vc(p4, -1.6533902205465250480E-6 ,ea0e,b6dd,5f84,2e93, -19,-.DDEA0E2E935F84) -vc(p5, 4.1381367970572387085E-8 ,bb4b,3431,2683,95f5, -24, .B1BB4B95F52683) - -#ifdef vccast -#define ln2hi vccast(ln2hi) -#define ln2lo vccast(ln2lo) -#define lnhuge vccast(lnhuge) -#define lntiny vccast(lntiny) -#define invln2 vccast(invln2) -#define p1 vccast(p1) -#define p2 vccast(p2) -#define p3 vccast(p3) -#define p4 vccast(p4) -#define p5 vccast(p5) -#endif - -ic(p1, 1.6666666666666601904E-1, -3, 1.555555555553E) -ic(p2, -2.7777777777015593384E-3, -9, -1.6C16C16BEBD93) -ic(p3, 6.6137563214379343612E-5, -14, 1.1566AAF25DE2C) -ic(p4, -1.6533902205465251539E-6, -20, -1.BBD41C5D26BF1) -ic(p5, 4.1381367970572384604E-8, -25, 1.6376972BEA4D0) -ic(ln2hi, 6.9314718036912381649E-1, -1, 1.62E42FEE00000) -ic(ln2lo, 1.9082149292705877000E-10,-33, 1.A39EF35793C76) -ic(lnhuge, 7.1602103751842355450E2, 9, 1.6602B15B7ECF2) -ic(lntiny,-7.5137154372698068983E2, 9, -1.77AF8EBEAE354) -ic(invln2, 1.4426950408889633870E0, 0, 1.71547652B82FE) +const static double p1 = 0x1.555555555553ep-3; +const static double p2 = -0x1.6c16c16bebd93p-9; +const static double p3 = 0x1.1566aaf25de2cp-14; +const static double p4 = -0x1.bbd41c5d26bf1p-20; +const static double p5 = 0x1.6376972bea4d0p-25; +const static double ln2hi = 0x1.62e42fee00000p-1; +const static double ln2lo = 0x1.a39ef35793c76p-33; +const static double lnhuge = 0x1.6602b15b7ecf2p9; +const static double lntiny = -0x1.77af8ebeae354p9; +const static double invln2 = 0x1.71547652b82fep0; #if 0 double exp(x) diff --git a/lib/msun/bsdsrc/mathimpl.h b/lib/msun/bsdsrc/mathimpl.h index d8e39f3..8c1f96f 100644 --- a/lib/msun/bsdsrc/mathimpl.h +++ b/lib/msun/bsdsrc/mathimpl.h @@ -37,53 +37,6 @@ #include <sys/cdefs.h> #include <math.h> -#if defined(vax)||defined(tahoe) - -/* Deal with different ways to concatenate in cpp */ -# define cat3(a,b,c) a ## b ## c - -/* Deal with vax/tahoe byte order issues */ -# ifdef vax -# define cat3t(a,b,c) cat3(a,b,c) -# else -# define cat3t(a,b,c) cat3(a,c,b) -# endif - -# define vccast(name) (*(const double *)(cat3(name,,x))) - - /* - * Define a constant to high precision on a Vax or Tahoe. - * - * Args are the name to define, the decimal floating point value, - * four 16-bit chunks of the float value in hex - * (because the vax and tahoe differ in float format!), the power - * of 2 of the hex-float exponent, and the hex-float mantissa. - * Most of these arguments are not used at compile time; they are - * used in a post-check to make sure the constants were compiled - * correctly. - * - * People who want to use the constant will have to do their own - * #define foo vccast(foo) - * since CPP cannot do this for them from inside another macro (sigh). - * We define "vccast" if this needs doing. - */ -# define vc(name, value, x1,x2,x3,x4, bexp, xval) \ - const static long cat3(name,,x)[] = {cat3t(0x,x1,x2), cat3t(0x,x3,x4)}; - -# define ic(name, value, bexp, xval) ; - -#else /* vax or tahoe */ - - /* Hooray, we have an IEEE machine */ -# undef vccast -# define vc(name, value, x1,x2,x3,x4, bexp, xval) ; - -# define ic(name, value, bexp, xval) \ - const static double name = value; - -#endif /* defined(vax)||defined(tahoe) */ - - /* * Functions internal to the math package, yet not static. */ |
