diff mbox series

[12/12] benchtests: Add tanhf function to bench-math

Message ID 20211029171941.4161172-13-skpgkp2@gmail.com
State Dropped
Headers
Series benchtests: Add float version of math functions to bench-math |

Checks

Context Check Description
dj/TryBot-apply_patch success Patch applied to master at the time it was sent
dj/TryBot-32bit success Build for i686

Commit Message

Sunil Pandey Oct. 29, 2021, 5:19 p.m. UTC 
  Add tanhf function to bench-math and copy tanhf-inputs to benchtests.
Motivation for this patch is to prepare for upcoming libmvec new
functions.  Float and double version of libmvec functions stays
together.

tanhf-inputs file generated from tanh-inputs file using following
scaling formula:

f = d * (FLT_MAX/DBL_MAX)

Where d is input(double) and f is output(float).  If scaled float value
is duplicate in new input file, nextafterf() function used to find next
float value, ensuring no duplicates.
---
 benchtests/Makefile     |   1 +
 benchtests/tanhf-inputs | 203 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 204 insertions(+)
 create mode 100644 benchtests/tanhf-inputs

Comments

Paul Zimmermann Nov. 3, 2021, 4:53 p.m. UTC | #1 
Dear Sunil,

out of the 200 inputs, 28 yield tanh(x)=1 or -1, and 52 yield tanh(x)=x,
thus only 120 exercise the "real cases".

Also maybe you could enlarge the file to 1000 inputs?

Paul
diff mbox series

Patch

diff --git a/benchtests/Makefile b/benchtests/Makefile
index 8d050d270d..9e81eb8842 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -90,6 +90,7 @@  bench-math := \
   sqrt \
   tan \
   tanh \
+  tanhf \
   tgamma \
   trunc \
   truncf \
diff --git a/benchtests/tanhf-inputs b/benchtests/tanhf-inputs
new file mode 100644
index 0000000000..e9a641f34e
--- /dev/null
+++ b/benchtests/tanhf-inputs
@@ -0,0 +1,203 @@ 
+## args: float
+## ret: float
+## includes: math.h
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