aboutsummaryrefslogtreecommitdiff
path: root/lib/mlibc/options/ansi/musl-generic-math/__expo2f.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/__expo2f.c')
-rw-r--r--lib/mlibc/options/ansi/musl-generic-math/__expo2f.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/__expo2f.c b/lib/mlibc/options/ansi/musl-generic-math/__expo2f.c
deleted file mode 100644
index 5163e41..0000000
--- a/lib/mlibc/options/ansi/musl-generic-math/__expo2f.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include "libm.h"
-
-/* k is such that k*ln2 has minimal relative error and x - kln2 > log(FLT_MIN) */
-static const int k = 235;
-static const float kln2 = 0x1.45c778p+7f;
-
-/* expf(x)/2 for x >= log(FLT_MAX), slightly better than 0.5f*expf(x/2)*expf(x/2) */
-float __expo2f(float x)
-{
- float scale;
-
- /* note that k is odd and scale*scale overflows */
- SET_FLOAT_WORD(scale, (uint32_t)(0x7f + k/2) << 23);
- /* exp(x - k ln2) * 2**(k-1) */
- return expf(x - kln2) * scale * scale;
-}