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 30552-d1d0643eee) Lines: 1467 1530 95.9 % Date: 2025-11-21 09:22:16 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22709
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35901
ZX_realroots_irred	48654
realroots	50627
ZX_sturm_irred	116777
ZX_sturm_i	123172
split_pols	166718
polsolve	166722
splitcauchy	166726
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267060
QX_complex_roots	296414
_gen_zero	326146
fix_roots1	398463
split_1	467915
conformal_mapping	467916
split_0_1	468278
split_0_2	468279
logradius	493966
split_2	493967
update_radius	493967
parameters	493968
optimize_split	493969
split_fromU	493969
split_0	494330
refine_F	502343
dft	502357
all_roots	536121
clean_roots	536164
fix_roots	537222
a_posteriori_errors	537226
mygprec_special	537227
logpre_modulus	606748
logmodulus	606752
abs_update_r	778652
ind_maxlog2	902643
isexactscalar	931714
isreal	961884
initdft	996325
dual_modulus	1012428
usp	1126072
ZX_sturmpart	1128257
check_ab	1178885
tocomplex	1213937
isvalidcoeff	1230235
ZX_Uspensky	1313902
conformal_basecase	1403862
conformal_pol	1403981
fujiwara_bound_real	1406932
split_complete	1525885
homothetie	1610058
append_clone	1614171
logmin_modulus	1614772
root_error	1912571
mygprecrc_special	2179174
ZX_rescale2prim	2233836
cmp_complex_appr	2238454
fujiwara_bound	2271795
checkbound	2354900
refine_H	2460429
scalepol	4289300
mygprec_absolute	4339975
_mp_mul	4374484
logmax_modulus	4450855
splitpoleval	5235429
bkeval_single_power	5235684
newton_polygon	5507124
X2XP1	5990529
_mp_sqr	6298333
dblexp	6548966
quicktofp	6979152
RgX_gtofp_bit	7031474
abs_update	8005024
mydbllogr	9546501
homothetie2n	9957619
_gen_nored	11198444
eval_rel_pol	13137901
fft	14158760
_gen_one	14472525
ZX_to_ZiX	16456915
pol_to_gaussint	17588694
_mp_add	24659011
_mp_cmul	34757169
myshiftrc	35506597
homothetie_gauss	36497816
lower_bound	40954199
findpower	40955322
graeffe	49505888
mydbllog2r	56182535
mygprec	63757301
ZiX_sqr	99033038
myshiftic	135799949
mygprecrc	215187646
mydbllog2i	226408187
dbllog2	302061653

Generated by: LCOV version 1.16