144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/*
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* QEMU float support - standalone helpers
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*
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* This is provided for files that don't need the access to the full
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* set of softfloat functions. Typically this is cpu initialisation
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* code which wants to set default rounding and exceptions modes.
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*
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* The code in this source file is derived from release 2a of the SoftFloat
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* IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and
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* some later contributions) are provided under that license, as detailed below.
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* It has subsequently been modified by contributors to the QEMU Project,
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* so some portions are provided under:
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* the SoftFloat-2a license
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* the BSD license
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* GPL-v2-or-later
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*
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* Any future contributions to this file after December 1st 2014 will be
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* taken to be licensed under the Softfloat-2a license unless specifically
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* indicated otherwise.
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*/
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/*
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===============================================================================
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This C header file is part of the SoftFloat IEC/IEEE Floating-point
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Arithmetic Package, Release 2a.
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Written by John R. Hauser. This work was made possible in part by the
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International Computer Science Institute, located at Suite 600, 1947 Center
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Street, Berkeley, California 94704. Funding was partially provided by the
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National Science Foundation under grant MIP-9311980. The original version
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of this code was written as part of a project to build a fixed-point vector
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processor in collaboration with the University of California at Berkeley,
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overseen by Profs. Nelson Morgan and John Wawrzynek. More information
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is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
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arithmetic/SoftFloat.html'.
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THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
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has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
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TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
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PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
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AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
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Derivative works are acceptable, even for commercial purposes, so long as
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(1) they include prominent notice that the work is derivative, and (2) they
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include prominent notice akin to these four paragraphs for those parts of
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this code that are retained.
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===============================================================================
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*/
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#ifndef SOFTFLOAT_HELPERS_H
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#define SOFTFLOAT_HELPERS_H
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#include "fpu/softfloat-types.h"
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static inline void set_float_detect_tininess(bool val, float_status *status)
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{
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status->tininess_before_rounding = val;
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}
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static inline void set_float_rounding_mode(FloatRoundMode val,
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float_status *status)
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{
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status->float_rounding_mode = val;
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}
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static inline void set_float_exception_flags(int val, float_status *status)
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{
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status->float_exception_flags = val;
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}
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static inline void set_floatx80_rounding_precision(FloatX80RoundPrec val,
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float_status *status)
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{
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status->floatx80_rounding_precision = val;
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}
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static inline void set_flush_to_zero(bool val, float_status *status)
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{
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status->flush_to_zero = val;
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}
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static inline void set_flush_inputs_to_zero(bool val, float_status *status)
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{
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status->flush_inputs_to_zero = val;
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}
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static inline void set_default_nan_mode(bool val, float_status *status)
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{
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status->default_nan_mode = val;
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}
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static inline void set_snan_bit_is_one(bool val, float_status *status)
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{
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status->snan_bit_is_one = val;
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}
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static inline void set_use_first_nan(bool val, float_status *status)
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{
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status->use_first_nan = val;
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}
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static inline void set_no_signaling_nans(bool val, float_status *status)
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{
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status->no_signaling_nans = val;
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}
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static inline bool get_float_detect_tininess(float_status *status)
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{
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return status->tininess_before_rounding;
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}
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static inline FloatRoundMode get_float_rounding_mode(float_status *status)
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{
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return status->float_rounding_mode;
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}
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static inline int get_float_exception_flags(float_status *status)
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{
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return status->float_exception_flags;
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}
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static inline FloatX80RoundPrec
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get_floatx80_rounding_precision(float_status *status)
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{
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return status->floatx80_rounding_precision;
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}
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static inline bool get_flush_to_zero(float_status *status)
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{
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return status->flush_to_zero;
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}
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static inline bool get_flush_inputs_to_zero(float_status *status)
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{
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return status->flush_inputs_to_zero;
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}
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static inline bool get_default_nan_mode(float_status *status)
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{
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return status->default_nan_mode;
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}
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#endif /* SOFTFLOAT_HELPERS_H */
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