From: Frank Chang <frank.chang@sifive.com>

In IEEE 754-2019, minNum, maxNum, minNumMag and maxNumMag are removed
and replaced with minimum, minimumNumber, maximum and maximumNumber.

minimumNumber/maximumNumber behavior for SNaN is changed to:
  * If both operands are NaNs, a QNaN is returned.
  * If either operand is a SNaN, an invalid operation exception is signaled,
    but unless both operands are NaNs, the SNaN is otherwise ignored and
    not converted to a QNaN.

This patchset add support of the above alternative sNaN propagation for
fmax/fmin, which is required by RISC-V floating-point v2.2.

Chih-Min Chao (2):
  softfloat: add APIs to handle alternative sNaN propagation for
    fmax/fmin
  target/riscv: change the api for single/double fmin/fmax

 fpu/softfloat-parts.c.inc | 19 +++++++++++++++++++
 fpu/softfloat.c           | 18 +++++++++++++-----
 include/fpu/softfloat.h   | 10 ++++++++++
 target/riscv/fpu_helper.c |  8 ++++----
 4 files changed, 46 insertions(+), 9 deletions(-)

--
2.25.1