Implement C23 atanpi

C23 adds various <math.h> function families originally defined in TS
18661-4.  Add the atanpi functions (atan(x)/pi).

Tested for x86_64 and x86, and with build-many-glibcs.py.

38 files changed, 285 insertions, 0 deletions

diff --git a/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps b/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps
index 3e6284e021..b7424cd609 100644
--- a/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps
+++ b/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps
@@ -200,6 +200,30 @@ float: 1
 float128: 4
 ldouble: 5
 
+Function: "atanpi":
+double: 1
+float: 1
+float128: 1
+ldouble: 1
+
+Function: "atanpi_downward":
+double: 1
+float: 1
+float128: 1
+ldouble: 1
+
+Function: "atanpi_towardzero":
+double: 1
+float: 1
+float128: 1
+ldouble: 1
+
+Function: "atanpi_upward":
+double: 1
+float: 1
+float128: 2
+ldouble: 1
+
 Function: "cabs":
 double: 1
 float128: 1
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Versions b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
index 0f3b65ca2a..251bcd48e3 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Versions
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
@@ -147,6 +147,7 @@ libm {
   GLIBC_2.41 {
     __acospiieee128;
     __asinpiieee128;
+    __atanpiieee128;
     __cospiieee128;
     __sinpiieee128;
     __tanpiieee128;
diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile
index 0cc4d84da1..1acde0be50 100644
--- a/sysdeps/ieee754/ldbl-opt/Makefile
+++ b/sysdeps/ieee754/ldbl-opt/Makefile
@@ -23,6 +23,7 @@ libnldbl-calls = \
   atan \
   atan2 \
   atanh \
+  atanpi \
   cabs \
   cacos \
   cacosh \
@@ -266,6 +267,7 @@ CFLAGS-nldbl-asinpi.c = -fno-builtin-asinpil
 CFLAGS-nldbl-atan.c = -fno-builtin-atanl
 CFLAGS-nldbl-atan2.c = -fno-builtin-atan2l
 CFLAGS-nldbl-atanh.c = -fno-builtin-atanhl
+CFLAGS-nldbl-atanpi.c = -fno-builtin-atanpil
 CFLAGS-nldbl-cabs.c = -fno-builtin-cabsl
 CFLAGS-nldbl-cacos.c = -fno-builtin-cacosl
 CFLAGS-nldbl-cacosh.c = -fno-builtin-cacoshl
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-atanpi.c b/sysdeps/ieee754/ldbl-opt/nldbl-atanpi.c
new file mode 100644
index 0000000000..259397d81e
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-atanpi.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+double
+attribute_hidden
+atanpil (double x)
+{
+  return atanpi (x);
+}
diff --git a/sysdeps/mach/hurd/i386/libm.abilist b/sysdeps/mach/hurd/i386/libm.abilist
index c194c9ae0c..77df9bbf33 100644
--- a/sysdeps/mach/hurd/i386/libm.abilist
+++ b/sysdeps/mach/hurd/i386/libm.abilist
@@ -1237,6 +1237,14 @@ GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpif64x F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif128 F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpif64x F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif128 F
diff --git a/sysdeps/mach/hurd/x86_64/libm.abilist b/sysdeps/mach/hurd/x86_64/libm.abilist
index 16d781a88e..6957af599d 100644
--- a/sysdeps/mach/hurd/x86_64/libm.abilist
+++ b/sysdeps/mach/hurd/x86_64/libm.abilist
@@ -1094,6 +1094,14 @@ GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpif64x F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif128 F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpif64x F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif128 F
diff --git a/sysdeps/powerpc/nofpu/Makefile b/sysdeps/powerpc/nofpu/Makefile
index 679b271025..aa44185e95 100644
--- a/sysdeps/powerpc/nofpu/Makefile
+++ b/sysdeps/powerpc/nofpu/Makefile
@@ -45,6 +45,7 @@ CFLAGS-s_acospil.c += -fno-builtin-fabsl
 CFLAGS-w_asinl_compat.c += -fno-builtin-fabsl
 CFLAGS-s_asinpil.c += -fno-builtin-fabsl
 CFLAGS-w_atanhl_compat.c += -fno-builtin-fabsl
+CFLAGS-s_atanpil.c += -fno-builtin-fabsl
 CFLAGS-w_j0l_compat.c += -fno-builtin-fabsl
 CFLAGS-w_j1l_compat.c += -fno-builtin-fabsl
 CFLAGS-e_lgammal_r.c += -fno-builtin-fabsl
diff --git a/sysdeps/unix/sysv/linux/aarch64/libm.abilist b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
index 165056eef1..2e2956be44 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
@@ -1205,6 +1205,14 @@ GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpif64x F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif128 F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpif64x F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif128 F
diff --git a/sysdeps/unix/sysv/linux/alpha/libm.abilist b/sysdeps/unix/sysv/linux/alpha/libm.abilist
index 0cf0ee6ae9..234486dc15 100644
--- a/sysdeps/unix/sysv/linux/alpha/libm.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist
@@ -1364,6 +1364,14 @@ GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpif64x F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif128 F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpif64x F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif128 F
diff --git a/sysdeps/unix/sysv/linux/arc/libm.abilist b/sysdeps/unix/sysv/linux/arc/libm.abilist
index fc383663af..0c9520e406 100644
--- a/sysdeps/unix/sysv/linux/arc/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libm.abilist
@@ -799,6 +799,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libm.abilist b/sysdeps/unix/sysv/linux/arm/be/libm.abilist
index 67ca2d54b8..5e7379841a 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libm.abilist
@@ -890,6 +890,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libm.abilist b/sysdeps/unix/sysv/linux/arm/le/libm.abilist
index 67ca2d54b8..5e7379841a 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libm.abilist
@@ -890,6 +890,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/csky/libm.abilist b/sysdeps/unix/sysv/linux/csky/libm.abilist
index f006214fde..980d4beeb2 100644
--- a/sysdeps/unix/sysv/linux/csky/libm.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libm.abilist
@@ -865,6 +865,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/hppa/libm.abilist b/sysdeps/unix/sysv/linux/hppa/libm.abilist
index cd02445c5e..e17b2c066e 100644
--- a/sysdeps/unix/sysv/linux/hppa/libm.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist
@@ -890,6 +890,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/i386/libm.abilist b/sysdeps/unix/sysv/linux/i386/libm.abilist
index 82189f5a26..0c72e275f5 100644
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -1244,6 +1244,14 @@ GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpif64x F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif128 F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpif64x F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif128 F
diff --git a/sysdeps/unix/sysv/linux/loongarch/lp64/libm.abilist b/sysdeps/unix/sysv/linux/loongarch/lp64/libm.abilist
index c3608c624f..84a09649f9 100644
--- a/sysdeps/unix/sysv/linux/loongarch/lp64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libm.abilist
@@ -1084,6 +1084,14 @@ GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpif64x F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif128 F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpif64x F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif128 F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
index 67ca2d54b8..5e7379841a 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
@@ -890,6 +890,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
index 8ce5f544a1..d65ece0eac 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
@@ -926,6 +926,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libm.abilist
index 5e5c14216c..85710af9af 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libm.abilist
@@ -890,6 +890,12 @@ GLIBC_2.41 asinpif32 F
 GLIBC_2.41 asinpif32x F
 GLIBC_2.41 asinpif64 F
 GLIBC_2.41 asinpil F
+GLIBC_2.41 atanpi F
+GLIBC_2.41 atanpif F
+GLIBC_2.41 atanpif32 F
+GLIBC_2.41 atanpif32x F
+GLIBC_2.41 atanpif64 F
+GLIBC_2.41 atanpil F
 GLIBC_2.41 cospi F
 GLIBC_2.41 cospif F
 GLIBC_2.41 cospif32 F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libm.abilist
index 5e5c14216c..85710af9af 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libm.abilist
@@ -890,6 +890,12 @@ GLIBC_2.41 asinpif32 F