diff options
Diffstat (limited to 'sysdeps/sparc/fpu')
| -rw-r--r-- | sysdeps/sparc/fpu/bits/mathdef.h | 4 | ||||
| -rw-r--r-- | sysdeps/sparc/fpu/fraiseexcpt.c | 22 |
2 files changed, 16 insertions, 10 deletions
diff --git a/sysdeps/sparc/fpu/bits/mathdef.h b/sysdeps/sparc/fpu/bits/mathdef.h index 0bc9c94ecc..505d724fd0 100644 --- a/sysdeps/sparc/fpu/bits/mathdef.h +++ b/sysdeps/sparc/fpu/bits/mathdef.h @@ -62,3 +62,7 @@ typedef double double_t; #define INFINITY HUGE_VAL #endif + +/* The values returned by `ilogb' for 0 and NaN respectively. */ +#define FP_ILOGB0 0x80000001 +#define FP_ILOGBNAN 0x7fffffff diff --git a/sysdeps/sparc/fpu/fraiseexcpt.c b/sysdeps/sparc/fpu/fraiseexcpt.c index 308c9b2e7f..28db8b360a 100644 --- a/sysdeps/sparc/fpu/fraiseexcpt.c +++ b/sysdeps/sparc/fpu/fraiseexcpt.c @@ -20,14 +20,16 @@ #include <fenv.h> #include <math.h> -static void -ignore_me(double foo) -{ -} - void feraiseexcept (int excepts) { + static volatile double sink; + static const struct { + double zero, one, max, min, sixteen, pi; + } c = { + 0.0, 1.0, DBL_MAX, DBL_MIN, 16.0, M_PI + }; + /* Raise exceptions represented by EXPECTS. But we must raise only one signal at a time. It is important the if the overflow/underflow exception and the inexact exception are given at the same time, @@ -37,30 +39,30 @@ feraiseexcept (int excepts) if ((FE_INVALID & excepts) != 0) { /* One example of a invalid operation is 0/0. */ - ignore_me (0.0 / 0.0); + sink = c.zero / c.zero; } /* Next: division by zero. */ if ((FE_DIVBYZERO & excepts) != 0) { - ignore_me (1.0 / 0.0); + sink = c.one / c.zero; } /* Next: overflow. */ if ((FE_OVERFLOW & excepts) != 0) { - ignore_me (LDBL_MAX * LDBL_MAX); + sink = c.max * c.max; } /* Next: underflow. */ if ((FE_UNDERFLOW & excepts) != 0) { - ignore_me (LDBL_MIN / 16.0); + sink = c.min / c.sixteen; } /* Last: inexact. */ if ((FE_INEXACT & excepts) != 0) { - ignore_me (1.0 / M_PI); + sink = c.one / c.pi; } } |