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.

11 files changed, 1532 insertions, 1 deletions

diff --git a/math/Makefile b/math/Makefile
index 87ff79b269..6f0d2108b2 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -95,6 +95,7 @@ gen-libm-calls = \
   k_casinhF \
   s_acospiF \
   s_asinpiF \
+  s_atanpiF \
   s_cacosF  \
   s_cacoshF \
   s_canonicalizeF \
@@ -626,6 +627,7 @@ libm-test-funcs-auto = \
   atan \
   atan2 \
   atanh \
+  atanpi \
   cabs \
   cacos \
   cacosh \
@@ -936,6 +938,7 @@ tgmath3-macros = \
   atan \
   atan2 \
   atanh \
+  atanpi \
   carg \
   cbrt \
   ceil \
@@ -1320,6 +1323,7 @@ CFLAGS-s_asinpi.c += -fno-builtin-asinpil
 CFLAGS-s_atan.c += -fno-builtin-atanl
 CFLAGS-w_atan2.c += -fno-builtin-atan2l
 CFLAGS-w_atanh.c += -fno-builtin-atanhl
+CFLAGS-s_atanpi.c += -fno-builtin-atanpil
 CFLAGS-s_cabs.c += -fno-builtin-cabsl
 CFLAGS-s_cacos.c += -fno-builtin-cacosl
 CFLAGS-s_cacosh.c += -fno-builtin-cacoshl
@@ -1463,6 +1467,7 @@ CFLAGS-s_asinpi.c += -fno-builtin-asinpif32x -fno-builtin-asinpif64
 CFLAGS-s_atan.c += -fno-builtin-atanf32x -fno-builtin-atanf64
 CFLAGS-w_atan2.c += -fno-builtin-atan2f32x -fno-builtin-atan2f64
 CFLAGS-w_atanh.c += -fno-builtin-atanhf32x -fno-builtin-atanhf64
+CFLAGS-s_atanpi.c += -fno-builtin-atanpif32x -fno-builtin-atanpif64
 CFLAGS-s_cabs.c += -fno-builtin-cabsf32x -fno-builtin-cabsf64
 CFLAGS-s_cacos.c += -fno-builtin-cacosf32x -fno-builtin-cacosf64
 CFLAGS-s_cacosh.c += -fno-builtin-cacoshf32x -fno-builtin-cacoshf64
@@ -1592,6 +1597,7 @@ CFLAGS-s_asinpif.c += -fno-builtin-asinpif32
 CFLAGS-s_atanf.c += -fno-builtin-atanf32
 CFLAGS-w_atan2f.c += -fno-builtin-atan2f32
 CFLAGS-w_atanhf.c += -fno-builtin-atanhf32
+CFLAGS-s_atanpif.c += -fno-builtin-atanpif32
 CFLAGS-s_cabsf.c += -fno-builtin-cabsf32
 CFLAGS-s_cacosf.c += -fno-builtin-cacosf32
 CFLAGS-s_cacoshf.c += -fno-builtin-cacoshf32
diff --git a/math/Versions b/math/Versions
index a7b79b0d6c..3abf90da82 100644
--- a/math/Versions
+++ b/math/Versions
@@ -657,12 +657,14 @@ libm {
     # Functions not involving _Float64x or _Float128, for all configurations.
     acospi; acospif; acospil; acospif32; acospif64; acospif32x;
     asinpi; asinpif; asinpil; asinpif32; asinpif64; asinpif32x;
+    atanpi; atanpif; atanpil; atanpif32; atanpif64; atanpif32x;
     cospi; cospif; cospil; cospif32; cospif64; cospif32x;
     sinpi; sinpif; sinpil; sinpif32; sinpif64; sinpif32x;
     tanpi; tanpif; tanpil; tanpif32; tanpif64; tanpif32x;
     # Functions involving _Float64x or _Float128, for some configurations.
     acospif64x; acospif128;
     asinpif64x; asinpif128;
+    atanpif64x; atanpif128;
     cospif64x; cospif128;
     sinpif64x; sinpif128;
     tanpif64x; tanpif128;
diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in
index 809df5ce09..ebea756d50 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -748,6 +748,46 @@ atanh -min
 atanh min_subnorm
 atanh -min_subnorm
 
+atanpi 0
+atanpi -0
+atanpi max
+atanpi -max
+atanpi 1
+atanpi -1
+atanpi 0.75
+atanpi 0x1p-5
+atanpi 0x1p-10
+atanpi 0x1p-15
+atanpi 0x1p-20
+atanpi 0x1p-25
+atanpi 0x1p-30
+atanpi 0x1p-35
+atanpi 0x1p-40
+atanpi 0x1p-45
+atanpi 0x1p-50
+atanpi 0x1p-55
+atanpi 0x1p-60
+atanpi 2.5
+atanpi 10
+atanpi 1e6
+atanpi 0x1p31
+atanpi 0x1p-100
+atanpi 0x1p-600
+atanpi 0x1p-10000
+atanpi -0x3.b02d84p-4
+atanpi -0x3.3fb708p-4
+atanpi -0x2.3249ap+0
+atanpi -0x1.363f46p+0
+atanpi -0x1.ad4c0ap+0
+atanpi -0x3.eb8e18p+0
+atanpi 0x3.53c188p+0
+atanpi -0x1.58c83p+0
+atanpi 0x1.626772p-1
+atanpi min
+atanpi -min
+atanpi min_subnorm
+atanpi -min_subnorm
+
 # cabs (x,y) == cabs (y,x).
 cabs 0.75 12.390625
 # cabs (x,y) == cabs (-x,y).
diff --git a/math/auto-libm-test-out-atanpi b/math/auto-libm-test-out-atanpi
new file mode 100644
index 0000000000..b6e8abdd09
--- /dev/null
+++ b/math/auto-libm-test-out-atanpi
@@ -0,0 +1,1379 @@
+atanpi 0
+= atanpi downward binary32 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi tonearest binary32 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi towardzero binary32 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi upward binary32 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi downward binary64 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi tonearest binary64 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi towardzero binary64 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi upward binary64 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi downward intel96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi tonearest intel96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi towardzero intel96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi upward intel96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi downward m68k96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi tonearest m68k96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi towardzero m68k96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi upward m68k96 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi downward binary128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi tonearest binary128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi towardzero binary128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi upward binary128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi downward ibm128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi tonearest ibm128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi towardzero ibm128 0x0p+0 : 0x0p+0 : inexact-ok
+= atanpi upward ibm128 0x0p+0 : 0x0p+0 : inexact-ok
+atanpi -0
+= atanpi downward binary32 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi tonearest binary32 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi towardzero binary32 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi upward binary32 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi downward binary64 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi tonearest binary64 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi towardzero binary64 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi upward binary64 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi downward intel96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi tonearest intel96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi towardzero intel96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi upward intel96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi downward m68k96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi tonearest m68k96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi towardzero m68k96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi upward m68k96 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi downward binary128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi tonearest binary128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi towardzero binary128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi upward binary128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi downward ibm128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi tonearest ibm128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi towardzero ibm128 -0x0p+0 : -0x0p+0 : inexact-ok
+= atanpi upward ibm128 -0x0p+0 : -0x0p+0 : inexact-ok
+atanpi max
+= atanpi downward binary32 0xf.fffffp+124 : 0x7.fffff8p-4 : inexact-ok
+= atanpi tonearest binary32 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary32 0xf.fffffp+124 : 0x7.fffff8p-4 : inexact-ok
+= atanpi upward binary32 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi downward binary64 0xf.fffffp+124 : 0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary64 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary64 0xf.fffffp+124 : 0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi upward binary64 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi downward intel96 0xf.fffffp+124 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi tonearest intel96 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi towardzero intel96 0xf.fffffp+124 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward intel96 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi downward m68k96 0xf.fffffp+124 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi tonearest m68k96 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi towardzero m68k96 0xf.fffffp+124 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward m68k96 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi downward binary128 0xf.fffffp+124 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary128 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary128 0xf.fffffp+124 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi downward ibm128 0xf.fffffp+124 : 0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi tonearest ibm128 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi towardzero ibm128 0xf.fffffp+124 : 0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi upward ibm128 0xf.fffffp+124 : 0x8p-4 : inexact-ok
+= atanpi downward binary64 0xf.ffffffffffff8p+1020 : 0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary64 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary64 0xf.ffffffffffff8p+1020 : 0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi upward binary64 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi downward intel96 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi tonearest intel96 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero intel96 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward intel96 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi downward m68k96 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi tonearest m68k96 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero m68k96 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward m68k96 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi downward binary128 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary128 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary128 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi downward ibm128 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi tonearest ibm128 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero ibm128 0xf.ffffffffffff8p+1020 : 0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi upward ibm128 0xf.ffffffffffff8p+1020 : 0x8p-4 : inexact-ok
+= atanpi downward intel96 0xf.fffffffffffffffp+16380 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi tonearest intel96 0xf.fffffffffffffffp+16380 : 0x8p-4 : inexact-ok
+= atanpi towardzero intel96 0xf.fffffffffffffffp+16380 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward intel96 0xf.fffffffffffffffp+16380 : 0x8p-4 : inexact-ok
+= atanpi downward m68k96 0xf.fffffffffffffffp+16380 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi tonearest m68k96 0xf.fffffffffffffffp+16380 : 0x8p-4 : inexact-ok
+= atanpi towardzero m68k96 0xf.fffffffffffffffp+16380 : 0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward m68k96 0xf.fffffffffffffffp+16380 : 0x8p-4 : inexact-ok
+= atanpi downward binary128 0xf.fffffffffffffffp+16380 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary128 0xf.fffffffffffffffp+16380 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary128 0xf.fffffffffffffffp+16380 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 0xf.fffffffffffffffp+16380 : 0x8p-4 : inexact-ok
+= atanpi downward binary128 0xf.fffffffffffffffffffffffffff8p+16380 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary128 0xf.fffffffffffffffffffffffffff8p+16380 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary128 0xf.fffffffffffffffffffffffffff8p+16380 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 0xf.fffffffffffffffffffffffffff8p+16380 : 0x8p-4 : inexact-ok
+= atanpi downward binary128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi tonearest binary128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero binary128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x8p-4 : inexact-ok
+= atanpi downward ibm128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi tonearest ibm128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x8p-4 : inexact-ok
+= atanpi towardzero ibm128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi upward ibm128 0xf.ffffffffffffbffffffffffffcp+1020 : 0x8p-4 : inexact-ok
+atanpi -max
+= atanpi downward binary32 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary32 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary32 -0xf.fffffp+124 : -0x7.fffff8p-4 : inexact-ok
+= atanpi upward binary32 -0xf.fffffp+124 : -0x7.fffff8p-4 : inexact-ok
+= atanpi downward binary64 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary64 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary64 -0xf.fffffp+124 : -0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi upward binary64 -0xf.fffffp+124 : -0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi downward intel96 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi tonearest intel96 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi towardzero intel96 -0xf.fffffp+124 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward intel96 -0xf.fffffp+124 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi downward m68k96 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi tonearest m68k96 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi towardzero m68k96 -0xf.fffffp+124 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward m68k96 -0xf.fffffp+124 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi downward binary128 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary128 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary128 -0xf.fffffp+124 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 -0xf.fffffp+124 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi downward ibm128 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi tonearest ibm128 -0xf.fffffp+124 : -0x8p-4 : inexact-ok
+= atanpi towardzero ibm128 -0xf.fffffp+124 : -0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi upward ibm128 -0xf.fffffp+124 : -0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi downward binary64 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary64 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary64 -0xf.ffffffffffff8p+1020 : -0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi upward binary64 -0xf.ffffffffffff8p+1020 : -0x7.ffffffffffffcp-4 : inexact-ok
+= atanpi downward intel96 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest intel96 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero intel96 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward intel96 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi downward m68k96 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest m68k96 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero m68k96 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward m68k96 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi downward binary128 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary128 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary128 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi downward ibm128 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest ibm128 -0xf.ffffffffffff8p+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero ibm128 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi upward ibm128 -0xf.ffffffffffff8p+1020 : -0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi downward intel96 -0xf.fffffffffffffffp+16380 : -0x8p-4 : inexact-ok
+= atanpi tonearest intel96 -0xf.fffffffffffffffp+16380 : -0x8p-4 : inexact-ok
+= atanpi towardzero intel96 -0xf.fffffffffffffffp+16380 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward intel96 -0xf.fffffffffffffffp+16380 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi downward m68k96 -0xf.fffffffffffffffp+16380 : -0x8p-4 : inexact-ok
+= atanpi tonearest m68k96 -0xf.fffffffffffffffp+16380 : -0x8p-4 : inexact-ok
+= atanpi towardzero m68k96 -0xf.fffffffffffffffp+16380 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi upward m68k96 -0xf.fffffffffffffffp+16380 : -0x7.fffffffffffffff8p-4 : inexact-ok
+= atanpi downward binary128 -0xf.fffffffffffffffp+16380 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary128 -0xf.fffffffffffffffp+16380 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary128 -0xf.fffffffffffffffp+16380 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 -0xf.fffffffffffffffp+16380 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi downward binary128 -0xf.fffffffffffffffffffffffffff8p+16380 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary128 -0xf.fffffffffffffffffffffffffff8p+16380 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary128 -0xf.fffffffffffffffffffffffffff8p+16380 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 -0xf.fffffffffffffffffffffffffff8p+16380 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi downward binary128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest binary128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero binary128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi upward binary128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x7.fffffffffffffffffffffffffffcp-4 : inexact-ok
+= atanpi downward ibm128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x8p-4 : inexact-ok
+= atanpi tonearest ibm128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x8p-4 : inexact-ok
+= atanpi towardzero ibm128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+= atanpi upward ibm128 -0xf.ffffffffffffbffffffffffffcp+1020 : -0x7.fffffffffffffffffffffffffep-4 : inexact-ok
+atanpi 1
+= atanpi downward binary32 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi tonearest binary32 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi towardzero binary32 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi upward binary32 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi downward binary64 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi tonearest binary64 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi towardzero binary64 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi upward binary64 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi downward intel96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi tonearest intel96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi towardzero intel96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi upward intel96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi downward m68k96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi tonearest m68k96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi towardzero m68k96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi upward m68k96 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi downward binary128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi tonearest binary128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi towardzero binary128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi upward binary128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi downward ibm128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi tonearest ibm128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi towardzero ibm128 0x1p+0 : 0x4p-4 : inexact-ok
+= atanpi upward ibm128 0x1p+0 : 0x4p-4 : inexact-ok
+atanpi -1
+= atanpi downward binary32 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi tonearest binary32 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi towardzero binary32 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi upward binary32 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi downward binary64 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi tonearest binary64 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi towardzero binary64 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi upward binary64 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi downward intel96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi tonearest intel96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi towardzero intel96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi upward intel96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi downward m68k96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi tonearest m68k96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi towardzero m68k96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi upward m68k96 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi downward binary128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi tonearest binary128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi towardzero binary128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi upward binary128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi downward ibm128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi tonearest ibm128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi towardzero ibm128 -0x1p+0 : -0x4p-4 : inexact-ok
+= atanpi upward ibm128 -0x1p+0 : -0x4p-4 : inexact-ok
+atanpi 0.75
+= atanpi downward binary32 0xcp-4 : 0x3.46feb8p-4 : inexact-ok
+= atanpi tonearest binary32 0xcp-4 : 0x3.46feb8p-4 : inexact-ok
+= atanpi towardzero binary32 0xcp-4 : 0x3.46feb8p-4 : inexact-ok
+= atanpi upward binary32 0xcp-4 : 0x3.46febcp-4 : inexact-ok
+= atanpi downward binary64 0xcp-4 : 0x3.46feb898833dep-4 : inexact-ok
+= atanpi tonearest binary64 0xcp-4 : 0x3.46feb898833dep-4 : inexact-ok
+= atanpi towardzero binary64 0xcp-4 : 0x3.46feb898833dep-4 : inexact-ok
+= atanpi upward binary64 0xcp-4 : 0x3.46feb898833ep-4 : inexact-ok
+= atanpi downward intel96 0xcp-4 : 0x3.46feb898833de668p-4 : inexact-ok
+= atanpi tonearest intel96 0xcp-4 : 0x3.46feb898833de66cp-4 : inexact-ok
+= atanpi towardzero intel96 0xcp-4 : 0x3.46feb898833de668p-4 : inexact-ok
+= atanpi upward intel96 0xcp-4 : 0x3.46feb898833de66cp-4 : inexact-ok
+= atanpi downward m68k96 0xcp-4 : 0x3.46feb898833de668p-4 : inexact-ok
+= atanpi tonearest m68k96 0xcp-4 : 0x3.46feb898833de66cp-4 : inexact-ok
+= atanpi towardzero m68k96 0xcp-4 : 0x3.46feb898833de668p-4 : inexact-ok
+= atanpi upward m68k96 0xcp-4 : 0x3.46feb898833de66cp-4 : inexact-ok
+= atanpi downward binary128 0xcp-4 : 0x3.46feb898833de66a5dc249472b9ap-4 : inexact-ok
+= atanpi tonearest binary128 0xcp-4 : 0x3.46feb898833de66a5dc249472b9ap-4 : inexact-ok
+= atanpi towardzero binary128 0xcp-4 : 0x3.46feb898833de66a5dc249472b9ap-4 : inexact-ok
+= atanpi upward binary128 0xcp-4 : 0x3.46feb898833de66a5dc249472b9cp-4 : inexact-ok
+= atanpi downward ibm128 0xcp-4 : 0x3.46feb898833de66a5dc249472bp-4 : inexact-ok
+= atanpi tonearest ibm128 0xcp-4 : 0x3.46feb898833de66a5dc249472cp-4 : inexact-ok
+= atanpi towardzero ibm128 0xcp-4 : 0x3.46feb898833de66a5dc249472bp-4 : inexact-ok
+= atanpi upward ibm128 0xcp-4 : 0x3.46feb898833de66a5dc249472cp-4 : inexact-ok
+atanpi 0x1p-5
+= atanpi downward binary32 0x8p-8 : 0x2.8bafcp-8 : inexact-ok
+= atanpi tonearest binary32 0x8p-8 : 0x2.8bafc4p-8 : inexact-ok
+= atanpi towardzero binary32 0x8p-8 : 0x2.8bafcp-8 : inexact-ok
+= atanpi upward binary32 0x8p-8 : 0x2.8bafc4p-8 : inexact-ok
+= atanpi downward binary64 0x8p-8 : 0x2.8bafc2b208c4ep-8 : inexact-ok
+= atanpi tonearest binary64 0x8p-8 : 0x2.8bafc2b208c5p-8 : inexact-ok
+= atanpi towardzero binary64 0x8p-8 : 0x2.8bafc2b208c4ep-8 : inexact-ok
+= atanpi upward binary64 0x8p-8 : 0x2.8bafc2b208c5p-8 : inexact-ok
+= atanpi downward intel96 0x8p-8 : 0x2.8bafc2b208c4f0acp-8 : inexact-ok
+= atanpi tonearest intel96 0x8p-8 : 0x2.8bafc2b208c4f0acp-8 : inexact-ok
+= atanpi towardzero intel96 0x8p-8 : 0x2.8bafc2b208c4f0acp-8 : inexact-ok
+= atanpi upward intel96 0x8p-8 : 0x2.8bafc2b208c4f0bp-8 : inexact-ok
+= atanpi downward m68k96 0x8p-8 : 0x2.8bafc2b208c4f0acp-8 : inexact-ok
+= atanpi tonearest m68k96 0x8p-8 : 0x2.8bafc2b208c4f0acp-8 : inexact-ok
+= atanpi towardzero m68k96 0x8p-8 : 0x2.8bafc2b208c4f0acp-8 : inexact-ok
+= atanpi upward m68k96 0x8p-8 : 0x2.8bafc2b208c4f0bp-8 : inexact-ok
+= atanpi downward binary128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b5eep-8 : inexact-ok
+= atanpi tonearest binary128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b5eep-8 : inexact-ok
+= atanpi towardzero binary128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b5eep-8 : inexact-ok
+= atanpi upward binary128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b5fp-8 : inexact-ok
+= atanpi downward ibm128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b5p-8 : inexact-ok
+= atanpi tonearest ibm128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b6p-8 : inexact-ok
+= atanpi towardzero ibm128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b5p-8 : inexact-ok
+= atanpi upward ibm128 0x8p-8 : 0x2.8bafc2b208c4f0ad3929bd05b6p-8 : inexact-ok
+atanpi 0x1p-10
+= atanpi downward binary32 0x4p-12 : 0x1.45f3p-12 : inexact-ok
+= atanpi tonearest binary32 0x4p-12 : 0x1.45f3p-12 : inexact-ok
+= atanpi towardzero binary32 0x4p-12 : 0x1.45f3p-12 : inexact-ok
+= atanpi upward binary32 0x4p-12 : 0x1.45f302p-12 : inexact-ok
+= atanpi downward binary64 0x4p-12 : 0x1.45f30012374f6p-12 : inexact-ok
+= atanpi tonearest binary64 0x4p-12 : 0x1.45f30012374f7p-12 : inexact-ok
+= atanpi towardzero binary64 0x4p-12 : 0x1.45f30012374f6p-12 : inexact-ok
+= atanpi upward binary64 0x4p-12 : 0x1.45f30012374f7p-12 : inexact-ok
+= atanpi downward intel96 0x4p-12 : 0x1.45f30012374f6cfep-12 : inexact-ok
+= atanpi tone