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

Generated by: LCOV version 1.16