Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30569-8181146aa1) Lines: 1467 1530 95.9 % Date: 2025-12-04 09:22:12 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296480
RgX_gtofp_bit	7031806
RgX_normalize1	35907
X2XP1	5989970
ZX_Uspensky	1313867
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48653
ZX_rescale2prim	2233597
ZX_sturm	6395
ZX_sturm_i	123196
ZX_sturm_irred	116801
ZX_sturmpart	1128199
ZX_to_ZiX	16456385
ZiX_sqr	99029803
_gen_nored	11203861
_gen_one	14473415
_gen_zero	326136
_intervalcmp	0
_mp_add	24662977
_mp_cmul	34769320
_mp_mul	4374573
_mp_sqr	6298227
_mp_sub	0
_sqrtnr	22707
a_posteriori_errors	537296
abs_update	8005291
abs_update_r	778682
all_roots	536191
append_clone	1614318
bkeval_single_power	5235858
check_ab	1178826
checkbound	2354784
checkvalidpol	267066
clean_roots	536236
cleanroots	231763
cmp_complex_appr	2238681
conformal_basecase	1403895
conformal_mapping	467929
conformal_pol	1404015
dblexp	6549070
dbllog2	302103718
dft	502369
dual_modulus	1012476
eval_rel_pol	13138497
fft	14159496
fft2	7462
findpower	40955184
fix_roots	537297
fix_roots1	398488
fujiwara_bound	2271905
fujiwara_bound_real	1406912
graeffe	49507193
homothetie	1610137
homothetie2n	9957917
homothetie_gauss	36497316
ind_maxlog2	902701
initdft	996347
isexactpol	239753
isexactscalar	931714
isreal	961906
isvalidcoeff	1230265
logmax_modulus	4450964
logmin_modulus	1614812
logmodulus	606772
logpre_modulus	606771
logradius	493976
lower_bound	40955323
mydbllog2i	226431706
mydbllog2r	56183499
mydbllogr	9546768
mygprec	63758575
mygprec_absolute	4340632
mygprec_special	537297
mygprecrc	215192866
mygprecrc_special	2179374
myshiftic	135821382
myshiftrc	35507093
newton_polygon	5507344
optimize_split	493983
parameters	493981
pol_to_gaussint	17589388
polgraeffe	14
polmod_to_embed	84
polrootsbound	27306
polrootsbound_i	27299
polsolve	166727
quicktofp	6979429
realroots	50627
refine_F	502367
refine_H	2460490
root_error	1912793
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289421
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494347
split_0_1	468290
split_0_2	468290
split_1	467927
split_2	493981
split_complete	1525984
split_fromU	493982
split_pols	166723
splitcauchy	166729
splitpoleval	5235642
tocomplex	1214175
update_radius	493980
usp	1125993

Generated by: LCOV version 1.16