// commit: f657fe4b9f734d7fdea515af8dffbf7c28ce4fbc 2013-09-05
// classify invalid x86 ld80 representations (this is ub, we follow the fpu)
+// test printf("%La") as well
#include <math.h>
#include <float.h>
#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
#include "test.h"
#if LDBL_MANT_DIG==64
return "invalid";
}
-#define T(desc,got,want) do{ \
-if (got!=want) t_error("fpclassify(%s) failed: got %s want %s\n", desc, strclass(got), #want); \
+#define T(f, desc, c, cwant, s, swant) do{ \
+ c = fpclassify(f); \
+ if (c != cwant) \
+ t_error("fpclassify(%s) failed: got %s want %s\n", desc, strclass(c), #cwant); \
+ memset(s, 0, sizeof(s)); \
+ if (snprintf(s, sizeof(s), "%La", f) >= sizeof(s)) \
+ t_error("snprintf(\"%%La\", %s) failed with invalid return value\n", desc); \
+ if (strcmp(s,swant) != 0) \
+ t_error("snprintf(\"%%La\", %s) failed: got \"%.*s\" want %s\n", desc, sizeof(s), s, #swant); \
}while(0)
int main(void)
} i;
} u;
int c;
+ int r;
+ char s[32];
u.f = 0;
u.i.m = (uint64_t)1<<63;
- c = fpclassify(u.f);
- T("zero with msb set", c, FP_NORMAL);
+ T(u.f, "zero with msb set", c, FP_NORMAL, s, "0x1p-16382");
u.i.m++;
- c = fpclassify(u.f);
- T("subnormal with msb set", c, FP_NORMAL);
+ T(u.f, "subnormal with msb set", c, FP_NORMAL, s, "0x1.0000000000000002p-16382");
u.f=1;
u.i.m=0;
- c = fpclassify(u.f);
- T("normal with msb unset", c, FP_NAN);
+ T(u.f, "normal with msb unset", c, FP_NAN, s, "nan");
u.f=INFINITY;
u.i.m=0;
- c = fpclassify(u.f);
- T("infinity with msb unset", c, FP_NAN);
+ T(u.f, "infinity with msb unset", c, FP_NAN, s, "nan");
u.f=NAN;
u.i.m&=(uint64_t)-1/2;
- c = fpclassify(u.f);
- T("nan with msb unset", c, FP_NAN);
+ T(u.f, "nan with msb unset", c, FP_NAN, s, "nan");
return t_status;
}
#else