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author | Denis Vlasenko <vda.linux@googlemail.com> | 2008-12-28 22:15:26 +0000 |
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committer | Denis Vlasenko <vda.linux@googlemail.com> | 2008-12-28 22:15:26 +0000 |
commit | 657f68a8f714863321c29dd23aa18f0d5ab40d65 (patch) | |
tree | f34d83fa156f971b8201d1687062dfc276d4c820 /libm/e_exp.c | |
parent | a5ed82b5f226456bc5dd86b4ee36e4175b4abe2a (diff) | |
download | uClibc-alpine-657f68a8f714863321c29dd23aa18f0d5ab40d65.tar.bz2 uClibc-alpine-657f68a8f714863321c29dd23aa18f0d5ab40d65.tar.xz |
remove many functions which just call __ieee754_<function>,
define them as aliases instead.
text data bss dec hex filename
- 45402 180 4 45586 b212 lib/libm-0.9.30-svn.so
+ 45302 180 4 45486 b1ae lib/libm-0.9.30-svn.so
Diffstat (limited to 'libm/e_exp.c')
-rw-r--r-- | libm/e_exp.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libm/e_exp.c b/libm/e_exp.c index ebf2e5af0..abfb17675 100644 --- a/libm/e_exp.c +++ b/libm/e_exp.c @@ -155,3 +155,28 @@ double attribute_hidden __ieee754_exp(double x) /* default IEEE double exp */ return y*twom1000; } } + +/* + * wrapper exp(x) + */ +#ifndef _IEEE_LIBM +double exp(double x) +{ + static const double o_threshold = 7.09782712893383973096e+02; /* 0x40862E42, 0xFEFA39EF */ + static const double u_threshold = -7.45133219101941108420e+02; /* 0xc0874910, 0xD52D3051 */ + + double z = __ieee754_exp(x); + if (_LIB_VERSION == _IEEE_) + return z; + if (isfinite(x)) { + if (x > o_threshold) + return __kernel_standard(x, x, 6); /* exp overflow */ + if (x < u_threshold) + return __kernel_standard(x, x, 7); /* exp underflow */ + } + return z; +} +#else +strong_alias(__ieee754_exp, exp) +#endif +libm_hidden_def(exp) |