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In order to be coherent with the pre-existent functions, this new API
is the one meant to be used when doing half float to float
conversions. It is no more than a wrapper for the softfloat.h API but
we meant to keep that one private.
v2:
- Replace custom f32 -> f16 RTZ implementation with the softfloat
one (Andres).
v3:
- Added API usage clarifying comments (Caio).
Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]>
Signed-off-by: Andres Gomez <[email protected]>
Reviewed-by: Caio Marcelo de Oliveira Filho <[email protected]>
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Suggested-by: Jason Ekstrand <[email protected]>
Signed-off-by: Eric Engestrom <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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The two implementations differ across the entire input range only in
that u_half.h preserves mantissa bits for NaNs. The u_half.h version
shaves 15% off of the text size of half_float.o.
Reviewed-by: Thomas Helland <[email protected]>
Reviewed-by: Kristian H. Kristensen <[email protected]>
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Only used, when asserts are enabled.
Fixes an unused-variable warning with gcc-8:
../../../src/util/half_float.c: In function '_mesa_half_to_unorm8':
../../../src/util/half_float.c:189:14: warning: unused variable 's' [-Wunused-variable]
const int s = (val >> 15) & 0x1;
^
Signed-off-by: Kai Wasserbäch <[email protected]>
Reviewed-by: Timothy Arceri <[email protected]>
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This fixes the build if __builtin_clz is unsupported.
Reviewed-by: Roland Scheidegger <[email protected]>
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Tested-by: Mike Lothian <[email protected]>
Tested-By: Gert Wollny <[email protected]>
Tested-by: Dieter Nützel <[email protected]>
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Needed in NIR too, so move out of mesa/main/imports.c
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Signed-off-by: Rob Clark <[email protected]>
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