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authorRich Felker <dalias@aerifal.cx>2020-02-06 16:29:49 -0500
committerRich Felker <dalias@aerifal.cx>2020-02-06 16:46:15 -0500
commita662220df547e5c2446518e74440a7d834f9ebe6 (patch)
treeb4dc5f425de2720a7329198a8173b963ca4375fa /src
parent2f0c31c0273b93196185a9d0dd260ee48e057c6d (diff)
downloadmusl-master.tar.gz
remove i386 asm for single and double precision exp-family functionsHEADmaster
these did not truncate excess precision in the return value. fixing them looks like considerable work, and the current C code seems to outperform them significantly anyway. long double functions are left in place because they are not subject to excess precision issues and probably better than the C code.
Diffstat (limited to 'src')
-rw-r--r--src/math/i386/exp.c1
-rw-r--r--src/math/i386/exp2.s1
-rw-r--r--src/math/i386/exp2f.s1
-rw-r--r--src/math/i386/exp2l.s2
-rw-r--r--src/math/i386/exp_ld.s55
-rw-r--r--src/math/i386/expf.s1
-rw-r--r--src/math/i386/expm1.s1
-rw-r--r--src/math/i386/expm1f.s1
-rw-r--r--src/math/i386/expm1l.s2
9 files changed, 3 insertions, 62 deletions
diff --git a/src/math/i386/exp.c b/src/math/i386/exp.c
deleted file mode 100644
index 11282284..00000000
--- a/src/math/i386/exp.c
+++ /dev/null
@@ -1 +0,0 @@
-// see exp_ld.s
diff --git a/src/math/i386/exp2.s b/src/math/i386/exp2.s
deleted file mode 100644
index f335a3e5..00000000
--- a/src/math/i386/exp2.s
+++ /dev/null
@@ -1 +0,0 @@
-# see exp.s
diff --git a/src/math/i386/exp2f.s b/src/math/i386/exp2f.s
deleted file mode 100644
index f335a3e5..00000000
--- a/src/math/i386/exp2f.s
+++ /dev/null
@@ -1 +0,0 @@
-# see exp.s
diff --git a/src/math/i386/exp2l.s b/src/math/i386/exp2l.s
index f335a3e5..8125761d 100644
--- a/src/math/i386/exp2l.s
+++ b/src/math/i386/exp2l.s
@@ -1 +1 @@
-# see exp.s
+# see exp_ld.s
diff --git a/src/math/i386/exp_ld.s b/src/math/i386/exp_ld.s
index df87c497..99cba01f 100644
--- a/src/math/i386/exp_ld.s
+++ b/src/math/i386/exp_ld.s
@@ -1,35 +1,8 @@
-.global expm1f
-.type expm1f,@function
-expm1f:
- flds 4(%esp)
- mov 4(%esp),%eax
- add %eax,%eax
- cmp $0x01000000,%eax
- jae 1f
- # subnormal x, return x with underflow
- fld %st(0)
- fmul %st(1)
- fstps 4(%esp)
- ret
-
.global expm1l
.type expm1l,@function
expm1l:
fldt 4(%esp)
- jmp 1f
-
-.global expm1
-.type expm1,@function
-expm1:
- fldl 4(%esp)
- mov 8(%esp),%eax
- add %eax,%eax
- cmp $0x00200000,%eax
- jae 1f
- # subnormal x, return x with underflow
- fsts 4(%esp)
- ret
-1: fldl2e
+ fldl2e
fmulp
mov $0xc2820000,%eax
push %eax
@@ -59,12 +32,6 @@ expm1:
fsubrp
ret
-.global exp2f
-.type exp2f,@function
-exp2f:
- flds 4(%esp)
- jmp 1f
-
.global exp2l
.global __exp2l
.hidden __exp2l
@@ -72,26 +39,6 @@ exp2f:
exp2l:
__exp2l:
fldt 4(%esp)
- jmp 1f
-
-.global expf
-.type expf,@function
-expf:
- flds 4(%esp)
- jmp 2f
-
-.global exp
-.type exp,@function
-exp:
- fldl 4(%esp)
-2: fldl2e
- fmulp
- jmp 1f
-
-.global exp2
-.type exp2,@function
-exp2:
- fldl 4(%esp)
1: sub $12,%esp
fld %st(0)
fstpt (%esp)
diff --git a/src/math/i386/expf.s b/src/math/i386/expf.s
deleted file mode 100644
index f335a3e5..00000000
--- a/src/math/i386/expf.s
+++ /dev/null
@@ -1 +0,0 @@
-# see exp.s
diff --git a/src/math/i386/expm1.s b/src/math/i386/expm1.s
deleted file mode 100644
index f335a3e5..00000000
--- a/src/math/i386/expm1.s
+++ /dev/null
@@ -1 +0,0 @@
-# see exp.s
diff --git a/src/math/i386/expm1f.s b/src/math/i386/expm1f.s
deleted file mode 100644
index f335a3e5..00000000
--- a/src/math/i386/expm1f.s
+++ /dev/null
@@ -1 +0,0 @@
-# see exp.s
diff --git a/src/math/i386/expm1l.s b/src/math/i386/expm1l.s
index f335a3e5..8125761d 100644
--- a/src/math/i386/expm1l.s
+++ b/src/math/i386/expm1l.s
@@ -1 +1 @@
-# see exp.s
+# see exp_ld.s