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 30364-8108102770) Lines: 1467 1530 95.9 % Date: 2025-06-30 09:21:07 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	5383
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22709
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35887
ZX_realroots_irred	48624
realroots	50627
ZX_sturm_irred	116751
ZX_sturm_i	123146
split_pols	166628
polsolve	166632
splitcauchy	166636
solve_exact_pol	231040
cleanroots	231644
isexactpol	239634
roots_com	239634
roots_aux	239662
checkvalidpol	266941
QX_complex_roots	290019
_gen_zero	325950
fix_roots1	394087
conformal_mapping	467799
split_1	467799
split_0_1	468117
split_0_2	468117
parameters	493842
split_2	493844
update_radius	493845
logradius	493846
optimize_split	493847
split_fromU	493847
split_0	494164
refine_F	502230
dft	502236
all_roots	529604
clean_roots	529657
a_posteriori_errors	530657
fix_roots	530662
mygprec_special	530664
logmodulus	606617
logpre_modulus	606619
abs_update_r	778408
ind_maxlog2	902417
isexactscalar	931280
isreal	961645
initdft	996077
dual_modulus	1012192
usp	1126020
ZX_sturmpart	1128234
check_ab	1178861
tocomplex	1201017
isvalidcoeff	1229675
ZX_Uspensky	1313839
conformal_basecase	1403507
conformal_pol	1403625
fujiwara_bound_real	1406839
split_complete	1518990
append_clone	1603049
homothetie	1609690
logmin_modulus	1614462
root_error	1899218
mygprecrc_special	2161077
cmp_complex_appr	2231742
ZX_rescale2prim	2233814
fujiwara_bound	2265078
checkbound	2354852
refine_H	2459824
scalepol	4288240
mygprec_absolute	4300428
_mp_mul	4373428
logmax_modulus	4449919
bkeval_single_power	5222967
splitpoleval	5223072
newton_polygon	5505890
X2XP1	5990396
_mp_sqr	6291682
dblexp	6547452
quicktofp	6961126
RgX_gtofp_bit	7023487
abs_update	8003609
mydbllogr	9544679
homothetie2n	9955478
_gen_nored	11175266
eval_rel_pol	13135050
fft	14157706
_gen_one	14440741
ZX_to_ZiX	16456262
pol_to_gaussint	17584953
_mp_add	24650918
_mp_cmul	34725978
myshiftrc	35500389
homothetie_gauss	36488531
lower_bound	40945595
findpower	40945678
graeffe	49494085
mydbllog2r	56780605
mygprec	63700162
ZiX_sqr	99005884
myshiftic	135790979
mygprecrc	215007015
mydbllog2i	224308550
dbllog2	300591478

Generated by: LCOV version 1.16