[4/6] MIPS/math: Implement optimized fmaximum/fminmum(, _mag)(, f)

diff --git a/sysdeps/mips/ieee754/s_fmaximum.c b/sysdeps/mips/ieee754/s_fmaximum.c
new file mode 100644
index 0000000000..5a1e6a0313
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fmaximum.c
@@ -0,0 +1,48 @@ 
+/* fmaximum().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+#include <math_private.h>
+
+double
+__fmaximum (double x, double y)
+{
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)                         \
+    && !defined(__mips_single_float)
+  /* MAX.d returns NUM if NUM vs qNAN.  */
+  if (isunordered (x, y))
+    return x + y;
+  double ret;
+  asm volatile("max.d	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  if (isgreater (x, y))
+    return x;
+  else if (isless (x, y))
+    return y;
+  if (isunordered (x, y))
+    return x + y;
+
+  int32_t xi;
+  GET_HIGH_WORD (xi, x);
+  return (xi < 0 ? y : x);
+#endif
+}
+
+libm_alias_double (__fmaximum, fmaximum)
diff --git a/sysdeps/mips/ieee754/s_fmaximum_mag.c b/sysdeps/mips/ieee754/s_fmaximum_mag.c
new file mode 100644
index 0000000000..0eac275167
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fmaximum_mag.c
@@ -0,0 +1,57 @@ 
+/* fmaximum_mag().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+#include <math_private.h>
+#include <math-type-macros-double.h>
+
+double
+__fmaximum_mag (double x, double y)
+{
+  /* MAXA.d return NUM if NUM vs qNAN.  ABS.d signals both sNAN and qNAN on
+     pre-R5.  */
+  if (isunordered (x, y))
+    return x + y;
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)                         \
+    && !defined(__mips_single_float)
+  double ret;
+  asm volatile("maxa.d	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  double ax;
+  double ay;
+#  if defined(__mips_hard_float) && !defined(__mips_single_float)
+  asm volatile("abs.d	%0, %1" : "=f"(ax) : "f"(x));
+  asm volatile("abs.d	%0, %1" : "=f"(ay) : "f"(y));
+#  else
+  ax = M_FABS (x);
+  ay = M_FABS (y);
+#  endif
+  if (isgreater (ax, ay))
+    return x;
+  else if (isless (ax, ay))
+    return y;
+
+  int32_t xi;
+  GET_HIGH_WORD (xi, x);
+  return (xi < 0 ? y : x);
+#endif
+}
+
+libm_alias_double (__fmaximum_mag, fmaximum_mag)
diff --git a/sysdeps/mips/ieee754/s_fmaximum_magf.c b/sysdeps/mips/ieee754/s_fmaximum_magf.c
new file mode 100644
index 0000000000..dd871bac07
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fmaximum_magf.c
@@ -0,0 +1,55 @@ 
+/* fmaximum_magf().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+#include <math-type-macros-float.h>
+
+float
+__fmaximum_magf (float x, float y)
+{
+  /* MAXA.s return NUM if NUM vs qNAN.  ABS.s signals both sNAN and qNAN on
+     pre-R5.  */
+  if (isunordered (x, y))
+    return x + y;
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)
+  float ret;
+  asm volatile("maxa.s	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  float ax;
+  float ay;
+#  if defined(__mips_hard_float)
+  asm volatile("abs.s	%0, %1" : "=f"(ax) : "f"(x));
+  asm volatile("abs.s	%0, %1" : "=f"(ay) : "f"(y));
+#  else
+  ax = M_FABS (x);
+  ay = M_FABS (y);
+#  endif
+  if (isgreater (ax, ay))
+    return x;
+  else if (isless (ax, ay))
+    return y;
+
+  int32_t xi;
+  GET_FLOAT_WORD (xi, x);
+  return (xi < 0 ? y : x);
+#endif
+}
+
+libm_alias_float (__fmaximum_mag, fmaximum_mag)
diff --git a/sysdeps/mips/ieee754/s_fmaximumf.c b/sysdeps/mips/ieee754/s_fmaximumf.c
new file mode 100644
index 0000000000..a266ee76b6
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fmaximumf.c
@@ -0,0 +1,46 @@ 
+/* fmaximumf().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+
+float
+__fmaximumf (float x, float y)
+{
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)
+  /* MAX.s returns NUM if NUM vs qNAN.  */
+  if (isunordered (x, y))
+    return x + y;
+  float ret;
+  asm volatile("max.s	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  if (isgreater (x, y))
+    return x;
+  else if (isless (x, y))
+    return y;
+  if (isunordered (x, y))
+    return x + y;
+
+  int32_t xi;
+  GET_FLOAT_WORD (xi, x);
+  return (xi < 0 ? y : x);
+#endif
+}
+
+libm_alias_float (__fmaximum, fmaximum)
diff --git a/sysdeps/mips/ieee754/s_fminimum.c b/sysdeps/mips/ieee754/s_fminimum.c
new file mode 100644
index 0000000000..083da390ae
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fminimum.c
@@ -0,0 +1,48 @@ 
+/* fminimum().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+#include <math_private.h>
+
+double
+__fminimum (double x, double y)
+{
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)                         \
+    && !defined(__mips_single_float)
+  /* MIN.d returns NUM if NUM vs qNAN.  */
+  if (isunordered (x, y))
+    return x + y;
+  double ret;
+  asm volatile("min.d	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  if (isgreater (x, y))
+    return y;
+  else if (isless (x, y))
+    return x;
+  if (isunordered (x, y))
+    return x + y;
+
+  int32_t xi;
+  GET_HIGH_WORD (xi, x);
+  return (xi < 0 ? x : y);
+#endif
+}
+
+libm_alias_double (__fminimum, fminimum)
diff --git a/sysdeps/mips/ieee754/s_fminimum_mag.c b/sysdeps/mips/ieee754/s_fminimum_mag.c
new file mode 100644
index 0000000000..7adaa1c279
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fminimum_mag.c
@@ -0,0 +1,57 @@ 
+/* fminimum_mag().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+#include <math_private.h>
+#include <math-type-macros-double.h>
+
+double
+__fminimum_mag (double x, double y)
+{
+  /* MINA.d return NUM if NUM vs qNAN.  ABS.d signals both sNAN and qNAN on
+     pre-R5.  */
+  if (isunordered (x, y))
+    return x + y;
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)                         \
+    && !defined(__mips_single_float)
+  double ret;
+  asm volatile("mina.d	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  double ax;
+  double ay;
+#  if defined(__mips_hard_float) && !defined(__mips_single_float)
+  asm volatile("abs.d	%0, %1" : "=f"(ax) : "f"(x));
+  asm volatile("abs.d	%0, %1" : "=f"(ay) : "f"(y));
+#  else
+  ax = M_FABS (x);
+  ay = M_FABS (y);
+#  endif
+  if (isgreater (ax, ay))
+    return y;
+  else if (isless (ax, ay))
+    return x;
+
+  int32_t xi;
+  GET_HIGH_WORD (xi, x);
+  return (xi < 0 ? x : y);
+#endif
+}
+
+libm_alias_double (__fminimum_mag, fminimum_mag)
diff --git a/sysdeps/mips/ieee754/s_fminimum_magf.c b/sysdeps/mips/ieee754/s_fminimum_magf.c
new file mode 100644
index 0000000000..6839e2914d
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fminimum_magf.c
@@ -0,0 +1,55 @@ 
+/* fminimum_magf().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+#include <math-type-macros-float.h>
+
+float
+__fminimum_magf (float x, float y)
+{
+  /* MAXA.s return NUM if NUM vs qNAN.  ABS.s signals both sNAN and qNAN on
+     pre-R5.  */
+  if (isunordered (x, y))
+    return x + y;
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)
+  float ret;
+  asm volatile("mina.s	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  float ax;
+  float ay;
+#  if defined(__mips_hard_float)
+  asm volatile("abs.s	%0, %1" : "=f"(ax) : "f"(x));
+  asm volatile("abs.s	%0, %1" : "=f"(ay) : "f"(y));
+#  else
+  ax = M_FABS (x);
+  ay = M_FABS (y);
+#  endif
+  if (isgreater (ax, ay))
+    return y;
+  else if (isless (ax, ay))
+    return x;
+
+  int32_t xi;
+  GET_FLOAT_WORD (xi, x);
+  return (xi < 0 ? x : y);
+#endif
+}
+
+libm_alias_float (__fminimum_mag, fminimum_mag)
diff --git a/sysdeps/mips/ieee754/s_fminimumf.c b/sysdeps/mips/ieee754/s_fminimumf.c
new file mode 100644
index 0000000000..f37ca1c23b
--- /dev/null
+++ b/sysdeps/mips/ieee754/s_fminimumf.c
@@ -0,0 +1,46 @@ 
+/* fminimumf().  MIPS version.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+
+float
+__fminimumf (float x, float y)
+{
+#if __mips_isa_rev >= 6 && defined(__mips_hard_float)
+  /* MIN.s returns NUM if NUM vs qNAN.  */
+  if (isunordered (x, y))
+    return x + y;
+  float ret;
+  asm volatile("min.s	%0, %1, %2" : "=f"(ret) : "f"(x), "f"(y));
+  return ret;
+#else
+  if (isgreater (x, y))
+    return y;
+  else if (isless (x, y))
+    return x;
+  if (isunordered (x, y))
+    return x + y;
+
+  int xi;
+  GET_FLOAT_WORD (xi, x);
+  return (xi < 0 ? x : y);
+#endif
+}
+
+libm_alias_float (__fminimum, fminimum)