[libc] Removed __LIBC_CONST_ATTR attribute and updated math.yaml with the new math functions

- deleted attribute from fabs function
- added math functions from llvm#98972

Author: RoseZhang03

libc/newhdrgen/yaml/math.yaml

@@ -64,8 +64,6 @@ functions:
     return_type: double
     arguments:
       - type: double
-    attributes:
-      - __LIBC_CONST_ATTR
   - name: fabsf
     standards: 
       - stdc
@@ -364,6 +362,20 @@ functions:
     arguments:
       - type: double
       - type: double
+  - name: fmull
+    standards:
+      - stdc
+    return_type: float
+    arguments:
+      - type: long double
+      - type: long double
+  - name: dmull
+    standards:
+      - stdc
+    return_type: double
+    arguments:
+      - type: long double
+      - type: long double
   - name: frexp
     standards: 
       - stdc
@@ -1323,6 +1335,30 @@ functions:
       - type: long double
       - type: long double
     guard: LIBC_TYPES_HAS_FLOAT16
+  - name: f16mul
+    standards:
+      - llvm_libc_ext
+    return_type: _Float16
+    arguments:
+      - type: double
+      - type: double
+    guard: LIBC_TYPES_HAS_FLOAT16
+  - name: f16mulf
+    standards:
+      - llvm_libc_ext
+    return_type: _Float16
+    arguments:
+      - type: float
+      - type: float
+    guard: LIBC_TYPES_HAS_FLOAT16
+  - name: f16mull
+    standards:
+      - llvm_libc_ext
+    return_type: _Float16
+    arguments:
+      - type: long double
+      - type: long double
+    guard: LIBC_TYPES_HAS_FLOAT16
   - name: f16sqrt
     standards: 
       - llvm_libc_ext
@@ -1756,6 +1792,14 @@ functions:
       - type: float128
       - type: float128
     guard: LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128
+  - name: f16mulf128
+    standards:
+      - stdc
+    return_type: _Float16
+    arguments:
+      - type: float128
+      - type: float128
+    guard: LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128
   - name: f16sqrtf128
     standards: 
       - llvm_libc_ext
@@ -1896,6 +1940,22 @@ functions:
       - type: float128
       - type: float128
     guard: LIBC_TYPES_HAS_FLOAT128
+  - name: fmulf128
+    standards:
+      - llvm_libc_ext
+    return_type: float
+    arguments:
+      - type: float128
+      - type: float128
+    guard: LIBC_TYPES_HAS_FLOAT128
+  - name: dmulf128
+    standards:
+      - llvm_libc_ext
+    return_type: double
+    arguments:
+      - type: float128
+      - type: float128
+    guard: LIBC_TYPES_HAS_FLOAT128
   - name: frexpf128
     standards: 
       - stdc