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softfloat: export squash_input_denormal functions 

I need these available outside of softfloat for some of the reciprocal
processing in aarch64 helper functions.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1394822294-14837-20-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Alex Bennée 2014-03-17 16:31:51 +00:00 committed by Peter Maydell
parent 2ed3ea110f
commit 7baeabce1d
2 changed files with 9 additions and 2 deletions
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4
fpu/softfloat.c
View File

@ -288,7 +288,7 @@ INLINE flag extractFloat32Sign( float32 a )
| If `a' is denormal and we are in flush-to-zero mode then set the | If `a' is denormal and we are in flush-to-zero mode then set the
| input-denormal exception and return zero. Otherwise just return the value. | input-denormal exception and return zero. Otherwise just return the value.
*----------------------------------------------------------------------------*/ *----------------------------------------------------------------------------*/
static float32 float32_squash_input_denormal(float32 a STATUS_PARAM) float32 float32_squash_input_denormal(float32 a STATUS_PARAM)
{ {
if (STATUS(flush_inputs_to_zero)) { if (STATUS(flush_inputs_to_zero)) {
if (extractFloat32Exp(a) == 0 && extractFloat32Frac(a) != 0) { if (extractFloat32Exp(a) == 0 && extractFloat32Frac(a) != 0) {
@ -473,7 +473,7 @@ INLINE flag extractFloat64Sign( float64 a )
| If `a' is denormal and we are in flush-to-zero mode then set the | If `a' is denormal and we are in flush-to-zero mode then set the
| input-denormal exception and return zero. Otherwise just return the value. | input-denormal exception and return zero. Otherwise just return the value.
*----------------------------------------------------------------------------*/ *----------------------------------------------------------------------------*/
static float64 float64_squash_input_denormal(float64 a STATUS_PARAM) float64 float64_squash_input_denormal(float64 a STATUS_PARAM)
{ {
if (STATUS(flush_inputs_to_zero)) { if (STATUS(flush_inputs_to_zero)) {
if (extractFloat64Exp(a) == 0 && extractFloat64Frac(a) != 0) { if (extractFloat64Exp(a) == 0 && extractFloat64Frac(a) != 0) {

7
include/fpu/softfloat.h
View File

@ -244,6 +244,13 @@ INLINE flag get_default_nan_mode(float_status *status)
*----------------------------------------------------------------------------*/ *----------------------------------------------------------------------------*/
void float_raise( int8 flags STATUS_PARAM); void float_raise( int8 flags STATUS_PARAM);
/*----------------------------------------------------------------------------
| If `a' is denormal and we are in flush-to-zero mode then set the
| input-denormal exception and return zero. Otherwise just return the value.
*----------------------------------------------------------------------------*/
float32 float32_squash_input_denormal(float32 a STATUS_PARAM);
float64 float64_squash_input_denormal(float64 a STATUS_PARAM);
/*---------------------------------------------------------------------------- /*----------------------------------------------------------------------------
| Options to indicate which negations to perform in float*_muladd() | Options to indicate which negations to perform in float*_muladd()
| Using these differs from negating an input or output before calling | Using these differs from negating an input or output before calling