diff options
| author | Kacper <kacper@mail.openlinux.dev> | 2025-12-09 19:20:15 +0100 |
|---|---|---|
| committer | Kacper <kacper@mail.openlinux.dev> | 2025-12-09 19:20:15 +0100 |
| commit | 885f5974cdf65b59415837ae97f5a14ef1350670 (patch) | |
| tree | 66ac13de29c7f4932c5fcae11773df574e4e256a /lib/libm/scalbnl.c | |
| parent | 8f9e448b2ef6db7cd905540c21f3c5b190e7a1e7 (diff) | |
feat: add gzip and new headers
Diffstat (limited to 'lib/libm/scalbnl.c')
| -rw-r--r-- | lib/libm/scalbnl.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/libm/scalbnl.c b/lib/libm/scalbnl.c new file mode 100644 index 00000000..db44dab0 --- /dev/null +++ b/lib/libm/scalbnl.c @@ -0,0 +1,36 @@ +#include "libm.h" + +#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 +long double scalbnl(long double x, int n) +{ + return scalbn(x, n); +} +#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 +long double scalbnl(long double x, int n) +{ + union ldshape u; + + if (n > 16383) { + x *= 0x1p16383L; + n -= 16383; + if (n > 16383) { + x *= 0x1p16383L; + n -= 16383; + if (n > 16383) + n = 16383; + } + } else if (n < -16382) { + x *= 0x1p-16382L * 0x1p113L; + n += 16382 - 113; + if (n < -16382) { + x *= 0x1p-16382L * 0x1p113L; + n += 16382 - 113; + if (n < -16382) + n = -16382; + } + } + u.f = 1.0; + u.i.se = 0x3fff + n; + return x * u.f; +} +#endif |