#define _GNU_SOURCE
+#include <float.h>
#include <math.h>
-#include "libc.h"
+#include "libm.h"
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+long double exp10l(long double x)
+{
+ return exp10(x);
+}
+#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
long double exp10l(long double x)
{
static const long double p10[] = {
- 1e-15, 1e-14, 1e-13, 1e-12, 1e-11, 1e-10,
- 1e-9, 1e-8, 1e-7, 1e-6, 1e-5, 1e-4, 1e-3, 1e-2, 1e-1,
+ 1e-15L, 1e-14L, 1e-13L, 1e-12L, 1e-11L, 1e-10L,
+ 1e-9L, 1e-8L, 1e-7L, 1e-6L, 1e-5L, 1e-4L, 1e-3L, 1e-2L, 1e-1L,
1, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
1e10, 1e11, 1e12, 1e13, 1e14, 1e15
};
long double n, y = modfl(x, &n);
- if (fabsl(n) < 16) {
+ union ldshape u = {n};
+ /* fabsl(n) < 16 without raising invalid on nan */
+ if ((u.i.se & 0x7fff) < 0x3fff+4) {
if (!y) return p10[(int)n+15];
y = exp2l(3.32192809488736234787031942948939L * y);
return y * p10[(int)n+15];
}
return powl(10.0, x);
}
+#endif
weak_alias(exp10l, pow10l);