diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_tan.c | 6 | ||||
| -rw-r--r-- | sysdeps/ieee754/flt-32/k_tanf.c | 13 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/k_tanl.c | 12 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/k_tanl.c | 12 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/k_tanl.c | 12 |
5 files changed, 51 insertions, 4 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_tan.c b/sysdeps/ieee754/dbl-64/s_tan.c index dcb4aca..b4e3bd2 100644 --- a/sysdeps/ieee754/dbl-64/s_tan.c +++ b/sysdeps/ieee754/dbl-64/s_tan.c @@ -34,6 +34,7 @@ /*********************************************************************/ #include <errno.h> +#include <float.h> #include "endian.h" #include <dla.h> #include "mpa.h" @@ -91,6 +92,11 @@ tan (double x) /* (I) The case abs(x) <= 1.259e-8 */ if (w <= g1.d) { + if (w < DBL_MIN) + { + double force_underflow = x * x; + math_force_eval (force_underflow); + } retval = x; goto ret; } diff --git a/sysdeps/ieee754/flt-32/k_tanf.c b/sysdeps/ieee754/flt-32/k_tanf.c index a67f36e..2f2076d 100644 --- a/sysdeps/ieee754/flt-32/k_tanf.c +++ b/sysdeps/ieee754/flt-32/k_tanf.c @@ -17,6 +17,7 @@ static char rcsid[] = "$NetBSD: k_tanf.c,v 1.4 1995/05/10 20:46:39 jtc Exp $"; #endif +#include <float.h> #include <math.h> #include <math_private.h> static const float @@ -48,7 +49,17 @@ float __kernel_tanf(float x, float y, int iy) if(ix<0x39000000) /* x < 2**-13 */ {if((int)x==0) { /* generate inexact */ if((ix|(iy+1))==0) return one/fabsf(x); - else return (iy==1)? x: -one/x; + else if (iy == 1) + { + if (fabsf (x) < FLT_MIN) + { + float force_underflow = x * x; + math_force_eval (force_underflow); + } + return x; + } + else + return -one / x; } } if(ix>=0x3f2ca140) { /* |x|>=0.6744 */ diff --git a/sysdeps/ieee754/ldbl-128/k_tanl.c b/sysdeps/ieee754/ldbl-128/k_tanl.c index dfba2d9..6a6fa9f 100644 --- a/sysdeps/ieee754/ldbl-128/k_tanl.c +++ b/sysdeps/ieee754/ldbl-128/k_tanl.c @@ -56,6 +56,7 @@ * = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y))) */ +#include <float.h> #include <libc-internal.h> #include <math.h> #include <math_private.h> @@ -98,8 +99,17 @@ __kernel_tanl (long double x, long double y, int iy) if ((ix | u.parts32.w1 | u.parts32.w2 | u.parts32.w3 | (iy + 1)) == 0) return one / fabs (x); + else if (iy == 1) + { + if (fabsl (x) < LDBL_MIN) + { + long double force_underflow = x * x; + math_force_eval (force_underflow); + } + return x; + } else - return (iy == 1) ? x : -one / x; + return -one / x; } } if (ix >= 0x3ffe5942) /* |x| >= 0.6743316650390625 */ diff --git a/sysdeps/ieee754/ldbl-128ibm/k_tanl.c b/sysdeps/ieee754/ldbl-128ibm/k_tanl.c index 7f1caee..e50cc88 100644 --- a/sysdeps/ieee754/ldbl-128ibm/k_tanl.c +++ b/sysdeps/ieee754/ldbl-128ibm/k_tanl.c @@ -56,6 +56,7 @@ * = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y))) */ +#include <float.h> #include <libc-internal.h> #include <math.h> #include <math_private.h> @@ -98,8 +99,17 @@ __kernel_tanl (long double x, long double y, int iy) { if ((ix | lx | (iy + 1)) == 0) return one / fabs (x); + else if (iy == 1) + { + if (fabsl (x) < LDBL_MIN) + { + long double force_underflow = x * x; + math_force_eval (force_underflow); + } + return x; + } else - return (iy == 1) ? x : -one / x; + return -one / x; } } if (ix >= 0x3fe59420) /* |x| >= 0.6743316650390625 */ diff --git a/sysdeps/ieee754/ldbl-96/k_tanl.c b/sysdeps/ieee754/ldbl-96/k_tanl.c index 31cd236..ae6821d 100644 --- a/sysdeps/ieee754/ldbl-96/k_tanl.c +++ b/sysdeps/ieee754/ldbl-96/k_tanl.c @@ -56,6 +56,7 @@ * = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y))) */ +#include <float.h> #include <math.h> #include <math_private.h> static const long double @@ -94,8 +95,17 @@ __kernel_tanl (long double x, long double y, int iy) { /* generate inexact */ if (x == 0 && iy == -1) return one / fabsl (x); + else if (iy == 1) + { + if (absx < LDBL_MIN) + { + long double force_underflow = x * x; + math_force_eval (force_underflow); + } + return x; + } else - return (iy == 1) ? x : -one / x; + return -one / x; } } if (absx >= 0.6743316650390625L) |