Implement C23 rsqrt

C23 adds various <math.h> function families originally defined in TS 18661-4. Add the rsqrt functions (1/sqrt(x)). The test inputs are taken from those for sqrt. Tested for x86_64 and x86, and with build-many-glibcs.py.
2025-10-12 19:04:54 +03:00 · 2025-03-07 19:15:26 +00:00
parent ee3b1d15da
commit 77261698b4
50 changed files with 3865 additions and 2 deletions
--- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
@@ -1245,3 +1245,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/alpha/libm.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist
@@ -1404,3 +1404,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/arc/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libm.abilist
@@ -829,3 +829,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/arm/be/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/arm/le/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/csky/libm.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libm.abilist
@@ -895,3 +895,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/hppa/libm.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -1284,3 +1284,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/loongarch/lp64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libm.abilist
@@ -1124,3 +1124,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
@@ -956,3 +956,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/microblaze/be/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/microblaze/le/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
@@ -1245,3 +1245,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/or1k/libm.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libm.abilist
@@ -829,3 +829,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
@@ -1067,3 +1067,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
@@ -1066,3 +1066,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist
@@ -1060,3 +1060,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist
@@ -1429,3 +1429,12 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 __rsqrtieee128 F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libm.abilist
@@ -1124,3 +1124,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist
@@ -1221,3 +1221,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
@@ -1348,3 +1348,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
@@ -1348,3 +1348,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/sh/be/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/sh/le/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libm.abilist
@@ -920,3 +920,9 @@ GLIBC_2.41 tanpif32 F
 GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
@@ -1355,3 +1355,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
@@ -1245,3 +1245,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
@@ -1278,3 +1278,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
@@ -1278,3 +1278,11 @@ GLIBC_2.41 tanpif32x F
 GLIBC_2.41 tanpif64 F
 GLIBC_2.41 tanpif64x F
 GLIBC_2.41 tanpil F
+GLIBC_2.42 rsqrt F
+GLIBC_2.42 rsqrtf F
+GLIBC_2.42 rsqrtf128 F
+GLIBC_2.42 rsqrtf32 F
+GLIBC_2.42 rsqrtf32x F
+GLIBC_2.42 rsqrtf64 F
+GLIBC_2.42 rsqrtf64x F
+GLIBC_2.42 rsqrtl F