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- Log ----------------------------------------------------------------- commit 6ea8fc645c5c60634e864a2741ee897b93a4ef5f Author: Raymond Toy toy.raymond@gmail.com Date: Sat Aug 2 15:12:40 2014 -0700

Add parens around && expressions to silence a clang warning.

diff --git a/src/lisp/e_cosh.c b/src/lisp/e_cosh.c index f33ec02..f022ec0 100644 --- a/src/lisp/e_cosh.c +++ b/src/lisp/e_cosh.c @@ -80,7 +80,7 @@ static double one = 1.0, half=0.5, huge = 1.0e300; /* |x| in [log(maxdouble), overflowthresold] */ lx = *( (((*(unsigned*)&one)>>29)) + (unsigned*)&x); if (ix<0x408633CE || - (ix==0x408633ce)&&(lx<=(unsigned)0x8fb9f87d)) { + ((ix==0x408633ce)&&(lx<=(unsigned)0x8fb9f87d))) { w = __ieee754_exp(half*fabs(x)); t = half*w; return t*w; diff --git a/src/lisp/e_sinh.c b/src/lisp/e_sinh.c index 16671a9..8444741 100644 --- a/src/lisp/e_sinh.c +++ b/src/lisp/e_sinh.c @@ -73,7 +73,7 @@ static double one = 1.0, shuge = 1.0e307;

/* |x| in [log(maxdouble), overflowthresold] */ lx = *( (((*(unsigned*)&one)>>29)) + (unsigned*)&x); - if (ix<0x408633CE || (ix==0x408633ce)&&(lx<=(unsigned)0x8fb9f87d)) { + if (ix<0x408633CE || ((ix==0x408633ce)&&(lx<=(unsigned)0x8fb9f87d))) { w = __ieee754_exp(0.5*fabs(x)); t = h*w; return t*w;

commit 917655e7117a29aef38412f3d4eadaae159bebce Author: Raymond Toy toy.raymond@gmail.com Date: Sat Aug 2 14:46:44 2014 -0700

Use unions to access the high and low parts of a double and update routine names.

* fdlibm.h: * Correct the names for sin, cos, and tan; they have fdlibm_ prefix. * Declare fdlibm_expm1 and __ieee754_exp. * e_cosh.c: * Use unions * Call fdlibm_expm1 instead of expm1. * e_sinh.c: * Use unions * Call fdlibm_expm1 instead of expm1. * s_tanh.c: * Use unions * Call fdlibm_expm1 instead of expm1.

diff --git a/src/lisp/e_cosh.c b/src/lisp/e_cosh.c index 204017d..f33ec02 100644 --- a/src/lisp/e_cosh.c +++ b/src/lisp/e_cosh.c @@ -50,9 +50,11 @@ static double one = 1.0, half=0.5, huge = 1.0e300; double t,w; int ix; unsigned lx; + union { int i[2]; double d; } ux;

/* High word of |x|. */ - ix = __HI(x); + ux.d = x; + ix = ux.i[HIWORD]; ix &= 0x7fffffff;

/* x is INF or NaN */ @@ -60,7 +62,7 @@ static double one = 1.0, half=0.5, huge = 1.0e300;

/* |x| in [0,0.5*ln2], return 1+expm1(|x|)^2/(2*exp(|x|)) */ if(ix<0x3fd62e43) { - t = expm1(fabs(x)); + t = fdlibm_expm1(fabs(x)); w = one+t; if (ix<0x3c800000) return w; /* cosh(tiny) = 1 */ return one+(t*t)/(w+w); diff --git a/src/lisp/e_sinh.c b/src/lisp/e_sinh.c index 8af8a11..16671a9 100644 --- a/src/lisp/e_sinh.c +++ b/src/lisp/e_sinh.c @@ -47,9 +47,11 @@ static double one = 1.0, shuge = 1.0e307; double t,w,h; int ix,jx; unsigned lx; + union { int i[2]; double d; } ux;

/* High word of |x|. */ - jx = __HI(x); + ux.d = x; + jx = ux.i[HIWORD]; ix = jx&0x7fffffff;

/* x is INF or NaN */ @@ -61,7 +63,7 @@ static double one = 1.0, shuge = 1.0e307; if (ix < 0x40360000) { /* |x|<22 */ if (ix<0x3e300000) /* |x|<2**-28 */ if(shuge+x>one) return x;/* sinh(tiny) = tiny with inexact */ - t = expm1(fabs(x)); + t = fdlibm_expm1(fabs(x)); if(ix<0x3ff00000) return h*(2.0*t-t*t/(t+one)); return h*(t+t/(t+one)); } diff --git a/src/lisp/fdlibm.h b/src/lisp/fdlibm.h index 180137b..325d7d4 100644 --- a/src/lisp/fdlibm.h +++ b/src/lisp/fdlibm.h @@ -48,8 +48,11 @@ extern int __kernel_rem_pio2(double*,double*,int,int,int,const int*); extern double __kernel_sin(double x, double y, int iy); extern double __kernel_cos(double x, double y); extern double __kernel_tan(double x, double y, int iy); -extern double sin(double x); -extern double cos(double x); -extern double tan(double x); +extern double fdlibm_sin(double x); +extern double fdlibm_cos(double x); +extern double fdlibm_tan(double x); +extern double fdlibm_expm1(double x); +extern double __ieee754_exp(double x); +

#endif diff --git a/src/lisp/s_tanh.c b/src/lisp/s_tanh.c index 7d77c2e..6b77004 100644 --- a/src/lisp/s_tanh.c +++ b/src/lisp/s_tanh.c @@ -44,17 +44,19 @@ static double one=1.0, two=2.0, tiny = 1.0e-300; #endif

#ifdef __STDC__ - double tanh(double x) + double fdlibm_tanh(double x) #else - double tanh(x) + double fdlibm_tanh(x) double x; #endif { double t,z; int jx,ix; + union { int i[2]; double d; } ux;

/* High word of |x|. */ - jx = __HI(x); + ux.d = x; + jx = ux.i[HIWORD]; ix = jx&0x7fffffff;

/* x is INF or NaN */ @@ -68,10 +70,10 @@ static double one=1.0, two=2.0, tiny = 1.0e-300; if (ix<0x3c800000) /* |x|<2**-55 */ return x*(one+x); /* tanh(small) = small */ if (ix>=0x3ff00000) { /* |x|>=1 */ - t = expm1(two*fabs(x)); + t = fdlibm_expm1(two*fabs(x)); z = one - two/(t+two); } else { - t = expm1(-two*fabs(x)); + t = fdlibm_expm1(-two*fabs(x)); z= -t/(t+two); } /* |x| > 22, return +-1 */

-----------------------------------------------------------------------

Summary of changes: src/lisp/e_cosh.c | 8 +++++--- src/lisp/e_sinh.c | 8 +++++--- src/lisp/fdlibm.h | 9 ++++++--- src/lisp/s_tanh.c | 12 +++++++----- 4 files changed, 23 insertions(+), 14 deletions(-)

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