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| author | marha <marha@users.sourceforge.net> | 2013-11-08 11:09:17 +0100 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2013-11-08 11:09:17 +0100 |
| commit | 401eb04e4dfb179291befb19d74e2e3148c4e268 (patch) | |
| tree | bb9056b67a7bdf37cba96fecc69ce81b1809fb03 /mesalib/src/gallium/auxiliary/util/u_math.h | |
| parent | f7050e0ff2d1dd147ff5ef45f8ff7d8d7833db48 (diff) | |
| download | vcxsrv-401eb04e4dfb179291befb19d74e2e3148c4e268.tar.gz vcxsrv-401eb04e4dfb179291befb19d74e2e3148c4e268.tar.bz2 vcxsrv-401eb04e4dfb179291befb19d74e2e3148c4e268.zip | |
libxtrans libxcb xcb-proto mesa git update 8 nov 2013
libxcb commit e8663a935890ff366f49e356211049dfd0d9756a
libxcb/xcb-proto commit 29beba6bf02bda86a5b163ace63e1d0a4d3eee5b
libxtrans commit 0153d1670e4a1883e1bb6dd971435d6268eac5ba
mesa commit 035cce83f7b3d9a037c9e7cc17a212d6cf7e927f
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_math.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_math.h b/mesalib/src/gallium/auxiliary/util/u_math.h index f5c14ef8d..426d5daa7 100644 --- a/mesalib/src/gallium/auxiliary/util/u_math.h +++ b/mesalib/src/gallium/auxiliary/util/u_math.h @@ -246,6 +246,19 @@ union di { /** + * Extract the IEEE float32 exponent. + */ +static INLINE signed +util_get_float32_exponent(float x) { + union fi f; + + f.f = x; + + return ((f.ui >> 23) & 0xff) - 127; +} + + +/** * Fast version of 2^x * Identity: exp2(a + b) = exp2(a) * exp2(b) * Let ipart = int(x) |